Want wholesale Smoke Detector?
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- OEM orders are welcome (product, package).
- Product quality and on-time delivery are guaranteed.
- will reply your inquiry in 24 hours.
- Providing the samples before place bulk orders
Why Choose Leiz International ?
Leiz International provides different specifications of smoke alarms to the fire detector distributors to meet the needs of different homes or places. We can also customize suitable customer solutions according to their ideas or actual needs.
As your professional smoke alarm wholesale provider from China, Leiz International is glad to provide long-term products and technical services for the fire alarm distributors, so you can easily obtain Leiz International products or services for the next different project. Please send your detailed requirements so that we can discuss with you.
∇Leiz International Provide customers with a smoke alarm that is simple to install and safe to operate without drilling.
∇From the selection of materials, style, quality, service and other aspects are strictly controlled, to ensure the quality of each product output, so that life is not only safe, comfortable, and not lack of fun.
∇Leiz International Specializing in the research and development of home security systems and digital electronic products, and has accumulated rich experience in the use and maintenance of different security products.
∇Our products mainly include residential smoke alarms, ceiling, and wall-mounted carbon monoxide detectors, wireless alarm systems, etc.The
Leiz International wholesale smoke detector
| smoke and carbon monoxide detector
* Battery Operated Smoke and Carbon Monoxide Detector LCD Display * Adopt high accurate electro-chemical CO sensor * Self test on the sensor and self diagnostics on the electronics
| Smart smoke detector
* LCD display indicates concentration PPM Smart smoke detector * Designed to latest EN 50291/CE requirements * Alarm memory function
| Smoke carbon monoxide detector
* Alarm output: Sound, flash, LCD indication * Cannot be fitted with battery missing
| Photoelectric smoke detector
* SMT manufacture technology, ensures reliability and stability * Alarm output: LCD indication, Sound & flash
| Fire alarm
* 360 Degree Fire Alarm Smoke Alarm System with Sound Light High Decibel Sensitivity * Intelligent micro processor control
| CO detector
* To detect CO gas(Carbon Monoxide) * Sensitivity can be calibrated into either UL2034 or EN50291 standards
Types of Smoke Detector
Generally, smoke detectors are controlled by microprocessors. According to different structures, fire smoke alarms can be divided into ionizing smoke detectors and photoelectric smoke detectors.
Ion smoke type
The ionizing smoke detector is a point detector It contains a small number of radioactive substances in the ionization room, making the air in the ionization room become a conductor, allowing a certain current to pass in the air between the two electrodes. Effective conductivity of the ionization chamber. When the smoke particles enter the ionization zone, they reduce the conductivity of the air due to their bonding with ions, resulting in a decrease in ion movement. The detector sounds an alarm when the conductivity is lower than a predetermined value.
Photoelectric smoke alarm
Photoelectric smoke detectors are also pointing detectors, It is developed by using the basic property that smoke generated during a fire can change the propagation characteristics of light. According to the absorption and scattering of light by smoke particles. Photoelectric smoke detectors are divided into shading type and astigmatism type.
Infrared beam smoke detector
The infrared beam smoke detector is linear, A fire detector responds to the smoke parameters around a certain linear narrow strip in the warning range. The main difference between it and the previous two point-type smoke detectors is that the linear smoke detector divides the beam transmitter and the photoelectric receiver into two independent parts installed in two opposite parts when used, and a beam connects the middle. Stand up. Infrared beam smoke detectors are divided into through-beam type and reflective type.
Smoke-sensing fire detectors are suitable for installation in places where there is a lot of smoke or flame retardant after a fire occurs; it is not suitable to be installed in places with heavy smoke or faster ventilation.
Gas detector
The combustible gas detector adopts a high-quality gas sensor, microprocessor combined with a precision temperature sensor can intelligently compensate for the drift of gas sensor, wide environmental adaption range, stable work, no need to debug, adopt ceiling installation method, simple installation, convenient wiring, and extensive It is used for safety monitoring in homes, hotels, apartments and other places where flammable gas exists. It can detect natural gas, liquefied petroleum gas, and artificial gas.
The working voltage of the detector is the DC power supply. After alarming, it can output a pair of relay passive contact signals (normally open and normally closed can be set by jumper), which is used to control ventilation equipment or normally provide open or normally closed alarm contacts for other equipment. When the concentration of combustible gas in the environment reaches the set threshold, it can send out an audible and visual alarm signal and can output the passive contact signal of the relay. When the concentration of combustible gas in the surrounding environment drops below the response threshold, the detector in the alarm state will automatically return to the normal working state.
Leiz International Whoesale Smoke Detector from China
Smoke and carbon monoxide detector
With the increase of modern home fires and electricity consumption, the frequency of home fires is increasing. Once a home fire occurs, it is easy to have unfavorable factors such as untimely fire extinguishing, lack of fire extinguishing equipment, panic, and slow escape, leading to significant loss of life and property. Exploring the characteristics of home fires and fire prevention countermeasures is of practical significance to prevent home fires and reduce fire losses.
In modern urban families, many people do not understand the knowledge of home safety caused by fire accidents, so that the happy family is immediately destroyed, some lead to family destruction, once the residents of the home fire, improper disposal, slow alarm, is the personnel, people should actively understand the main causes of home fires, fire prevention knowledge, and fire prevention methods, timely elimination.
More than 50,000 serious home fires occur each year in the UK, most of which cause casualties and major family property damage; even involving neighbors, the fire damage is even more serious. When investigating the causes of fires, the vast majority of people involved in fire homes said they always thought fires were someone else’s business, far away from them, and didn’t expect it to happen to them this time.
The main cause of home fires is carelessness and failure to take timely preventive measures.
In some large and medium-sized cities in China, home fires happen almost every day, so fire prevention is an issue that every family must always be concerned about. Some tragedies can be completely avoided if you can take simple fire prevention measures in advance according to the actual situation of your home.
Fire department statistics show that home fires account for about 30% of all fires in the country. There are many causes of home fires, which may or may not be noticeable to us at all.
Smoke alarms are one of the most important means of preventing fires and detecting fires caused by large amounts of smoke.
Fire Alarm
Considering the sensitivity of smoke alarms according to the geographical location and application environment, to achieve the desired effect of the user, the
Smart smoke detector
Fires occur almost simultaneously with the use of fires, and with the development, the wealth of materials has increased, causing more and more harm. Especially in cities, it has dense buildings, concentrated population, concentrated property, flammable and explosive materials from many sources, many points, a wide range of characteristics, bringing more fire and explosion risks. In case of fires and explosions, there are large casualties and serious economic losses. Therefore, we should have a sense of safety and protection. According to a survey, 93% of homes in the United States have at least one set of smoke alarms. The number of homes with smoke alarms has increased, and the number of deaths from residential fires has been reduced by almost half. When a fire starts, smoke builds up under the ceiling in the room. Smoke detectors monitor the presence of smoke in real-time and regularly detect the environment every 45 seconds or so; the alarms detect discrete light sources, small smoke particles, and aerosols by sensing them through an internal intelligent processor. Once smoke is detected, an alarm sound is immediately output through a built-in dedicated IC driver circuit and an external piezoelectric transducer to make people aware of the fire as soon as possible.
Microprocessor control and the electrochemical sensor is a carbon monoxide smoke composite detector wholesale.
The electrochemical sensor has high stability, low power consumption, and small sensitivity drift. It is mainly used in places where carbon monoxide gas leakage and fire may occur to ensure personal safety.
Description of Smart smoke detector
En-50291 carbon monoxide detector En-50291 adopts a high-quality electrochemical gas sensor and advanced technology. Installation methods are available as portable, ceiling-mounted, and wall-mounted. Easy to install and operate. When the concentration of carbon monoxide in the air reaches the preset alarm level, the detector will issue audio and video alarms in time to notify the user to take measurement measures to avoid fire, explosion, and other dangerous accidents.
Applications of smoke detector
The battery-powered Co Alarm En-50291 home carbon monoxide detector wholesale uses an electrochemical sensor to detect dangerous carbon monoxide fumes effectively and alert you to their release. It is recommended for use in any indoor room.
Features of smoke detector
EN50291 certified.
The carbon monoxide alarm is battery-powered.
High-quality electrochemical sensor.
Easy to install and numerous installations.
Single-chip computer control
Peak memory
Leiz International-Your Trusted Smoke Detector Wholesaler
We are the leading supplier of smoke detectors in the industry. We can ship to anywhere all over the world. Installers, contractors, other professionals, and homeowners love us because of our low pricing and fast shipping. We can also provide you with hard-to-find items. We can sourcing it for you with our professional knowledges.
We have a large, diverse selection of smoke alarms in different sizes and models from well-known brands, and we also accept OEM custom requests from our customers.
Leiz International is working closely with leading smoke alarm manufacturers to offer our customers the latest product innovations and the best range from market-leading brands at competitive prices. We are committed to providing our customers with outstanding promotional programs throughout the year.
Exceptional customer service is at the heart of our company culture. With experience in extensive international trade, logistics, and transportation, Leitz is ideally positioned to meet the needs of our customers. We are fully committed to our fast-track branch opening program, which means we can now serve smoke alarm dealers around the world. Our friendly and knowledgeable staff can confidently assist you with any product inquiries.
Leiz International has always provided quality products and services to our customers. We stand out from the competition with a professional staff, reliable support, and long-term dedication to the trade companies and smoke alarm dealers we serve. We provide smoke alarm product solutions for both the residential and commercial markets. Most importantly, we stand by our integrity and commitment to your satisfaction. So, when service and quality matter, consider Leiz International
Fire alarms made in China have got recognition in the U.S. market for their superior quality and elegance. Many people, including end users and businessmen, turn to China to purchase these and many other products. If you still need to import from China, here’s what you need to know. We’ve got everything you need to buy Fire alarms. This article will provide a comprehensive overview of the basics of fire alarm sensor, including how to choose a Fire alarm, how to find a good supplier and solutions to some common problems.
Fire alarms are a great new concept for the industry. Its continued growth is due to increased construction activity, a booming hospitality industry, increased disposable income and a growing concern for home safety. If you are a distributor, wholesaler or retailer of fire sensor, consider importing these products from China. As we’ve said before, global sourcing from China is becoming attractive due to the wide variety of Chinese products and low manufacturing costs. Companies are attracted by the tremendous opportunity to make money reselling cheap wholesale goods.
Why to import Fire alarms from China?
Unless you’ve been living under a rock for the past 20 years, you’ve probably realized that importing from China is a big business in the world. Chinese products are everywhere. If you look around your current room and take a quick look (and look closely), you’ll quickly see that a large percentage of products are made or assembled in China.
From your computer desk to the lamp above your desk, many of the things we see every day are made in a factory in China.
If they know what they are doing, the importer will decide to put it in a 40-foot container. You can make a lot of money doing that.
You may ask why?
Because when you take it home and resell it, it becomes good business! There are many reasons for this.
Wages are cheaper in China.
Materials are more readily available.
The Chinese are experts at designing products.
The Chinese are masters of mass production. Finally, to everyone’s surprise, Chinese production lines are more sophisticated and organized than their Western counterparts.
When it comes to making things, the Chinese know what to do.
Advantages of imported fire alarm from china
Reduce the cost of importing from China.
This is the main reason that attracts many companies to import products from Asian countries, and although it is not the only reason, we cannot ignore it.
Making our products in China is clearly lower than any American company. Although we may think that the cost of imports adds to the total price of the product, it is clear that, except for the cost of transportation, the cost of manufacturing is lower than the cost of production in our territory. The lower the company’s costs, the more competitive it is and the more profitable it is for business.
The quality of products is higher than in other Asian countries.
Despite the false myths about the poor quality of Chinese products, products produced in Asian countries are usually of higher quality than those imported from Asian countries like India or Vietnam.
This is because they are used to working in China under the many stringent requirements of the European market.
High volume, no problem.
Most companies that decide to import products from China do so, despite the concerns this raises. However, there is no reason to worry because the Chinese factories are a huge structure that is really ready and used to manufacturing large quantities of products.
Customizing our products is not a problem.
Often, companies considering importing products from China worry that their customers think all products are the same. This is false, because manufacturing in China is synonymous with being able to customize products to our liking. We don’t have to sacrifice our customers’ desires or corporate image.
Consolidation of private lable for the consumer market.
The possibility of importing custom products from China with customized products and exclusive specifications, not to mention the fact that you can carry your logo on the packaging and boxes, is another great benefit of importing from an Asian country.
This allows you to establish and consolidate your brand in the market. In short, it not only allows you to be recognized by consumers and competitors, but also allows you to offer exclusive products that will set you apart from your competition and establish an identity with your customers.
In our lives, we often come across a variety of sensors. These sensors help us to identify and detect various potential hazards such as smoke, noise and flooding, and convert them into electrical signals to prevent disasters from happening.Here we will focus on smoke alarms commonly used in the home.
Smoke sensors, also known as smoke alarms or smoke detectors, are capable of detecting smoke generated during a fire. With an internal photoelectric smoke sensing device, they can be widely used in shopping malls, hotels, shops, warehouses, machine rooms, homes and other places for fire safety detection. The smoke alarm has a built-in buzzer and can emit a strong sound when the alarm is activated.
From the intrinsic principle, smoke alarms are used to prevent fires by monitoring the concentration of smoke, and smoke alarms use ionised smoke sensing inside, which is a technologically advanced, stable and reliable sensor that is widely used in various fire alarm systems and has a much better performance than gas resistor type fire alarms. It has a radioactive source of americium 241 inside and outside the ionisation chamber. The positive and negative ions generated by ionisation move towards the positive and negative electrodes under the action of the electric field. Under normal circumstances, the current and voltage in the inner and outer ionisation chamber are stable. Once the fumes have escaped from the outer ionisation chamber. This interferes with the normal movement of the charged particles, the current and voltage will change, destroying the balance between the inner and outer ionisation chamber, and the wireless transmitter will send out a wireless alarm signal to notify the receiving host at a distant location to transmit the alarm information.
How do I choose the right smoke alarms? Previously, smoke alarms were not much of a priority in this country, with less than 5% of homes having a smoke alarm compared to around 95% in the USA, which is a considerable risk to home safety. As we surf the internet every day, we may often read news about fires and fire hazards that threaten people’s safety. If a smoke alarm had been installed on some premises, a lot of tragedy might have been avoided.
Smoke alarms, also known as fire smoke alarms, smoke sensors, smoke sensors, etc., are designed to prevent fires by monitoring smoke concentration. Generally, stand-alone, physical product battery-powered or AC-powered battery-powered backup, ready-made alarms that give an audible and visual indication are called stand-alone smoke alarms. This is called a stand-alone smoke alarm. Powered by a bus, there can be more than one connected to the bus, and the fire alarm controller is networked and communicates to form an alarm system, with no sound at the alarm scene and sound and light indication from the host. Smoke detectors are divided into those with address code and those without address code.
Stand-alone smoke detecting and fire alarm devices use photoelectric smoke sensing or ion smoke sensing technology, which can send out alarms directly after detecting a fire at an early stage, reminding the site personnel to quickly call the police to evacuate in time.
Classification of smoke detector
A smoke alarm, according to different ways of transmitting information from the detector to the host, can be divided into wired and wireless two kinds of wired mostly networked, requiring an external power supply, but can be linked with other systems, such as water spray, alarm, etc., once an accident can be immediately linked processing, mostly used in superstores, office buildings and other places.
The wireless ones are stand-alone and mainly use batteries. Compared to the wired ones, they are more convenient to install and do not require an additional power socket, but the batteries need to be replaced regularly. Some smart smoke alarms are now available with an additional WIFI module so that even freestanding models can be linked to other alarm products in the same network environment. From an installation point of view, most stand-alone types are direct paste type, which can be directly pasted on the ceiling by glue.
Smoke alarms can be divided from the sensors used into
Ion smoke alarms have an ionization chamber; the ionization chamber uses a radioactive element one saw 241 (Am241), the intensity of about 0.8 micro Curie, the normal state in the electric field in a state of equilibrium, when the soot into the ionization chamber will disrupt this equilibrium, the alarm circuit detects the concentration of more than a set threshold alarm.
It is the presence of a small amount of radioactive material within the ionization chamber that makes the air within the room a conductor, allowing a constant current to pass through the air between the two electrodes, the rays ionizing the local atmosphere and the ion current to be formed by the voltage action, which gives the ionization chamber an effective electrical conductivity. When the smoke particles enter the ionization zone, they reduce the air’s electrical conductivity due to their association with ions, resulting in a reduction in ion mobility. When the conductivity falls below a predetermined value, the detector sounds an alarm.
Smoke alarm that scream when there is smoke from a fire, do I need to install co detector in my home?
Stand-alone photoelectric smoke and fire alarms are known as stand-alone smoke detectors. It is sensitive to smoke and will not stop screaming once a fire has started. It is the most effective means of monitoring against incipient fires.
The National Fire Protection Association reports that in the event of a fire in a home with the recommended number of smoke alarms installed, the house occupants will have a 50 percent greater chance of escape than if the family was not established.
At 3 AM on 27 May 2017, a fire broke out on the 4th floor of a residential house in Gefen community, Jianggan District, Hangzhou, with burning materials such as quilts and furniture, and two occupants were sleeping at the time of the incident.
Fortunately, the smoke generated at the fire’s time triggered the independent smoke alarm installed in the room. The 2 occupants were woken up by the alarm and discovered the fire in time to flee the scene as soon as possible!
“Freestanding fire smoke detection alarms,” which require no wiring and are battery-powered, can be sensed as soon as smoke occurs early in a fire.
With an alarming Smoke co detector, once a parent senses smoke, a sound and light alarm of more than 80 decibels informs the user that there is a fire.
Simulation experiments
1. Simulate a bin fire
After the fire, the sense of smoke is almost 50 seconds faster than a human’s reaction!
Can last at least 15 minutes in a closed room
With 3,000 fire-related deaths a year across the United States and nearly 90 percent of tragedies caused by smoke alarms that are not installed in the home or that are installed but do not function, Leiz International is reminding everyone not to forget to replace the batteries in your smoke alarms, which need to be replaced twice a year.
A survey by the National Fire Protection Association found that nearly two-thirds of the nation’s home fire deaths occurred in homes that did not have smoke alarms installed.
At least one Smoke alarm should be present in any housing, including your own home, rented accommodation, re-located houses, caravans, campervans, or any other dwelling where people can sleep.
Statistics show that without a working Smoke co detector, you are up to twice as likely to die in a house fire; you have less than two minutes to get out of the house once a fire starts; there are over 4,000 house fires in NSW every year; and on average, a house fire occurs every two hours.
Research shows that a significant proportion of smoke alarms do not work due to dead or missing batteries, which is a potential safety hazard.
FAQ about Best smoke alarms
What is the difference between the old ionizing smoke alarms and photoelectric smoke alarms?
Whereas ionosensory smoke alarms ‘feel’ smoke, photoelectric smoke alarms ‘see’ smoke particles, using newer technology, have fewer false alarms and are more reliable. They are more effective at detecting undetectable smokeless combustion and are not as prone to false alarms as ionic smoke alarms when cooking or showering. Sometimes people find it troublesome to stop the alarm.
How do I choose a photoelectric smoke detector?
Residents are always advised to see that smoke alarms are clearly labeled ‘photoelectric’ on the packaging. That ionizing smoke alarms have a yellow sticker warning of radioactivity, while photoelectric smoke alarms do not.
Residents are also advised to use a 10-year lithium battery, rather than the regular 9-volt battery replaced at least once a year. Lithium batteries have the same lifespan as photoelectric smoke alarms, so they only need to be replaced every ten years.
How do I determine my life expectancy?
To assist in determining the age of a smoke alarm, the AS3786 standard makes a requirement for a serial or batch number; for example, 2406 may mean that the product was manufactured in the 24th week of 2006; some manufacturers mark the date of manufacture on the alarm, others keep the date of expiry, and the product batch number is usually on the base, near the battery housing. If you have just had a new ionizing smoke alarm, you can keep it, but NSW Fire and Rescue recommends installing a separate photoelectric smoke alarm.
Where smoke detector are used and how they are commonly installed?
Bedrooms, corridors, and lounges should have a higher level of fire protection, and multi-story rooms should have alarms on each floor, preferably on the roof of the kitchen and lounge room, where they can be heard clearly. A common mistake is to install alarms close to kitchens and bathrooms, but it is recommended to install them near bedrooms and access routes.
How do I make sure my Smoke and carbon monoxide alarm are working correctly?
Leiz International recommends that residents have their smoke alarms checked at regular intervals.
Monthly: Smoke alarms should be tested monthly; press the ‘test’ button to ensure the battery is charged and the alarm is working correctly.
Smoke alarms should be cleaned with a hoover to remove soot and particles to prevent them from not working correctly every six months.
Annually: If the smoke alarm uses standard 9 volts (lead or alkaline) batteries, the batteries should be changed every year. A right way of remembering to charge the battery is to do it every daylight saving time to set the clock. If it is a lithium battery built into the alarm and cannot be replaced, it should be replaced every 10 years in conjunction with the alarm.
Every 10 years: Every alarm should be replaced at least every 10 years, irrespective of the type of notice, as the sensitivity of the alarm decreases with the passage of time.
Also, modern technology has made fast-burning stoves increasingly popular in furniture, which means that a fatal fire can burn entirely in as little as three minutes, compared to 20 minutes in the 1970s. New technology in photoelectric smoke alarms makes them more sensitive, especially to modern cooking appliances.
Therefore the incomplete statistics are.
Reset Reset button
Depending on the model, some smoke alarms have a restart button. When the reset button is pressed, the alarm will be reset again and, with any luck, the alarm will shut up.
Open windows for ventilation
Suppose you have an open-plan kitchen and have windows that open directly onto the outdoors. Don’t hesitate to open the window. Let the air circulate and take the smoke or water mist away.
*It is best not to open doors that face closed corridors. If this is not done correctly, it is possible that the whole building will rattle.
Fan the wind furiously
This technique is even more effective than the method used upstairs. Just take a reliable towel or magazine that can blow air out and fan it against the smoke alarm to ensure that the air around the notice is OK.
*For less severe cases.
Remove and replace the batteries.
If you are in a situation where I have to remove the battery, put the battery back in. Different models react differently to battery removal. You can try it, but it is not recommended.
If the battery is dead, then change it.
Find a property
The property people are the most reliable. Of course, it depends on the property’s level when you are relieved from the zipper wow.
So, again, a word of caution, don’t dismantle your smoke alarms. A word to the wise about the coverings on smoke alarms, please use them scientifically.
Everything is still done from the point of view of safety for everyone, and when the fire alarm goes off, first check whether there is a fire or not, and then deal with the situation accordingly.
Smoke detector are used to monitor the concentration of smoke to achieve fire prevention, ring smoke detector internal photoelectric smoke alarm principle, photoelectric smoke sensor is a technologically advanced, stable and reliable sensor, is widely used in a variety of fire alarm systems, performance is far better than gas-sensitive resistive fire alarms. It is suitable for smoke monitoring in indoor environments such as homes, shopping malls, hotels and warehouses.
Leiz International smoke detector are designed on the principle of photoelectric smoke detection, with built-in smoke sensors and photoelectric smoke detectors. Smoke moves upwards, and as it rises to the bottom of the ceiling and enters the interior of the alarm, smoke particles scatter part of the light beam onto the sensor. When the beam of light scattered on the sensor reaches a certain level, a buzzer sounds an alarm, at the same time as the sensor converts the light signal into an electrical signal and transmits it to the automatic fire alarm system to indicate a fire in the area.
Stand-alone firex smoke detector have the characteristics of accurate measurement, responsiveness and high stability; in line with the fire GB4715-2005 standard, ceiling-mounted, no need for commissioning, able to 360 ° all-round detection of fire; the use of patch technology can be resistant to EMI, RFI interference, once the “capture” to the object burning “signal”, the signal will be uploaded to the fire system, to ensure the continuity of information transmission.
According to statistics, the proportion of deaths, injuries and property damage caused by fires has been greatly reduced with the introduction of Smoke co detector. The National Fire Protection Association reports that in the event of a fire in a home with the recommended number of smoke alarms installed, the occupants of the home will have a 50% greater chance of escape than if the home were not installed, so it is essential to have an alarm in the home.
The correct installation of a smoke alarm is the first step in ensuring fire safety, so how should it be done? The following is a list of some of the most common methods of installing the 485 signal cable in your home.
Fix the installation base to the ceiling with screws. 4.
After installation, it is recommended to carry out a simulated fire test to test whether the alarm can be used normally.
Installation Notes
1. The alarm should be dustproof and the dust cover should not be removed until the project has been officially put into use.
2、When installed on the roof, if installed on an inclined or man-shaped roof, the alarm should maintain a certain distance from the roof Whenever the slope is less than 30°, a distance of 0.2m is appropriate; when it is greater than 30°, a distance of 0.3m~0.5m is appropriate.
3, do not install in places where smoke normally remains,Smoke alarm are strongly sensitive to smoke, so for places such as the kitchen, smoking, etc., which are prone to smoke, the alarm is likely to be false.
4. Avoid installation in places with large dust, water mist, steam, oil mist pollution and corrosive gases.
5. The temperature and humidity of the working environment of Hard wired smoke detectors should not exceed -10~50℃, avoid installing them in places where the relative humidity is greater than 95% and the ventilation speed is greater than 5m/s.
6. Avoid installation in close proximity to fluorescent light fittings.
7. It is recommended that a mock fire test should be carried out every six months to test whether the alarm is working properly.
8, Never mask Home depot smoke detectors with tape, plastic bags, etc.!
How do I choose the right smoke detector? Previously,Nest smoke detector were not much of a priority in this country, with less than 5% of homes having a smoke alarm compared to around 95% in the USA, which is a huge risk to home safety. As we surf the internet every day, we may often read news about fires and fire hazards that threaten people’s safety. If a smoke alarm had been installed in some premises, a lot of tragedy might have been avoided.
Smoke detector, also known as fire first alert smoke detector, smoke sensors, smoke sensors, etc., are designed to prevent fires by monitoring the concentration of smoke. Generally, stand-alone, physical product battery-powered, or AC-powered battery-powered backup, ready-made alarms that give an audible and visual indication are called stand-alone smoke alarms. This is called a stand-alone smoke alarm. Powered by a bus, there can be more than one connected to the bus, and the fire alarm controller is networked and communicates to form an alarm system, with no sound at the alarm scene and sound and light indication from the host. Smoke detectors are divided into those with address code and those without address code.
Stand-alone smoke and fire detecting and alarm devices use photoelectric or ion smoke sensing technology, which can send out alarms directly after detecting a fire at an early stage, reminding the site personnel to call the police quickly and evacuate in time.
Classification of smoke detector
A smoke alarm according to different ways of transmitting information from the detector to the host can be divided into wired and wireless 2 kinds of wired mostly networked, requiring external power supply, but can be linked with other systems, such as water spray, alarm, etc., once an accident can be immediately linked processing, mostly used in superstores, office buildings and other places.
The wireless ones are stand-alone and mainly use batteries. Compared to the wired ones, they are more convenient to install and do not require an additional power socket, but the batteries need to be replaced regularly. Some smart smoke dector are now available with an additional WIFI module, so that even freestanding models can be linked to other alarm products in the same network environment. From an installation point of view, most stand-alone types are direct paste type, which can be directly pasted on the ceiling by glue.
Smoke detector can be divided from the sensors used into
Ion Smoke and carbon monoxide alarm have an ionisation chamber, the ionisation chamber uses a radioactive element one saw 241 (Am241), the intensity of about 0.8 micro Curie or so, under normal conditions in the electric field of equilibrium, when the soot into the ionisation chamber will disrupt this equilibrium, the alarm circuit detects the concentration of more than a set threshold alarm.
It is the presence of a small amount of radioactive material within the ionisation chamber that makes the air within the chamber a conductor, allowing a constant current to pass through the air between the two electrodes, the rays ionising the local air and the ion current to be formed by the voltage action, which gives the ionisation chamber an effective electrical conductivity. When the smoke particles enter the ionisation zone, they reduce the electrical conductivity of the air due to their association with ions, resulting in a reduction in ion mobility. The detector sounds an alarm when the conductivity falls below a predetermined value.
When the smoke enters the optical labyrinth, it is refracted and reflected and the receiving tube receives the infrared light. The intelligent alarm circuit judges whether the threshold value has been exceeded and issues an alarm if it has. The. Depending on how light is absorbed and scattered by smoke particles, the photoelectric smoke detectors are divided into shading and diffusing types. Photoelectric smoke detectors are divided into blackout and diffusive types.
VESDA stands for “Very Early Smoke Detection Device”, a name that is based on the function of the product. Depending on their principle characteristics, they are also referred to as aspirated or pick-up style smoke detectors. VESDA – instead of waiting for the smoke to drift to the detector, VESDA actively samples and detects the air, so that the air sample in the protected area is sucked into the sampling pipe by the suction pump inside VESDA and sent to the detector for analysis. Four pipes into the VESDA pass through filters, suction pumps feed the laser detection chamber and detection signals are sent to the control display unit. During this time there is also sub-filtered air to keep the optical components in the laser cavity clean.
Smoke detector can be divided according to function into
Civilian fire smoke alarms are used in residential homes and are generally installed in kitchens. When smoke from a fire is encountered, the alarm can be audible or visual, or accompanied by a digital display, and linked to external equipment. Some alarms ding white to switch on the exhaust fan and vent the smoke outside.
Industrial Best smoke alarms and noxious smoke alarms differ only in their detection probes, but are very similar in principle and application. Industrial smoke alarms and noxious smoke alarms can also be divided into leak detectors, controllers and detectors depending on the detection environment. Leak detectors are small in size, can be carried around or held, and are mainly used for leak detection and inspection in gas management. If there is a smoke leak, the Leak Detector will give an audible and visual alarm, as well as a digital display of the smoke concentration, so that safety measures can be taken in time to prevent vicious accidents such as explosions. The Leiz International controller can be used in combination with a detector to permanently monitor the concentration of smoke in an explosion-proof site. The detector is installed in the explosion-proof site and the controller is wall-mounted in a manned area such as a duty room, connected by a shielded cable. When the detector in the field detects a leak, it sends a signal through the shielded cable to the controller, which gives an audible and visual alarm and simultaneously starts the exhaust device or closes the solenoid valve to cut off the power supply to ensure safety. The apparatus is widely used in industrial sites such as liquefaction stations, automobile petrol stations and boiler rooms.
Places of application and common installation methods of smoke detecor
Smart smoke detector can be widely used in homes, “three-in-one” premises, buildings for the elderly, the disabled and children, the homes of “empty nesters”, destitute elderly people, community residential premises, old dwellings, dormitories, rented houses and other buildings where people have died. Fire-prone premises. Smoke alarms should be installed in areas of public activity in the above-mentioned buildings and premises, bedrooms and other rest rooms in residential buildings, living and drawing rooms, kitchens, dining rooms, internal corridors, the upper part of the evacuation stairs on each floor, and other rooms and parts of the building where there is a risk of fire.
How to choose the right smoke alarms?
FAQ about Smoke Detector
Why is my hard-wired smoke detector beeping?
Smoke alarm by the bus power supply, fire alarm controller networking, communication to form an alarm system, and no sound alarm scene, the host has sound and light tips. A smoke alarm is a technologically advanced, stable, and reliable sensor. It is widely used in a variety of fire alarm systems; performance is far better than the gas-sensitive resistive fire alarms. Many friends do not know how to lift the smoke alarm has been ringing, the following Leiz International to introduce the method of raising the smoke alarm. I hope it can help you.
1. There may be dust, mosquitoes in the smoke alarm, which needs to be cleaned often, especially on the dust; dust is a relatively big place. If bugs are into the smoke maze, it will also affect the chip sensing, causing false alarms.
It may be battery under-voltage; wireless alarms are different from traditional wired products; you need to check manually often one by one whether the under-voltage. The smoke detector has a self-inspection, under-voltage alarm function; when the alarm has been ringing, it may be the battery under-voltage.
How does a best smoke detector work?
Most smoke alarms have two types of detectors. Photoelectric detectors use light technology and sensors. A beam of light radiates at a 90-degree angle from the built-in sensor in a notice with a photodetector. In smoke, smoke particles interrupt the beam so that it reflects tiny particles and triggers the sensor. This is when the alarm sounds.
Smoke alarms should receive proper maintenance to ensure that they are working correctly and functioning correctly. The other most common type of smoke alarm has an ionization detector, which works using an electric current created by electrons and ions moving between two inner panels. When smoke enters the interior, the wind is interrupted, and an alarm sounds. Alarms with ionization detectors are the most common type found in homes. Although they contain a minimal amount of radiation, they are entirely safe to use in the house. However, the internal mechanism of such smoke alarms should not directly handle the
Smoke alarms may help save a homeowner’s life in the event of a house fireInstalling smoke alarms on every level of the proper home maintenance is necessary to ensure they work year-round. Still, it’s simple, replace the batteries twice a year and test the alarm function by pressing the test button once a month. Most smoke alarms work on 9-volt batteries.
Smoke particles can interrupt the beam and cause it to reflect tiny particles. When choosing a new smoke alarm, check that the alarm sound emitted is in pitch and noise level; this will wake you up from a sound sleep. Some types of smoke alarms have programmable alarms that allow you to record your sounds. Determine which kind of warning will get your attention the most, and then perform the necessary routine maintenance. Hopefully, your smoke alarm will never need to save your life, but knowing that you have one working properly can help you sleep better at night.
Smoke alarms should be loud enough to wake residents up from a sound sleep.
How to stop smoke detector from chirping without battery?
At present, smoke alarms, from the sound aspect there are three; one is the intelligent bus smoke, version of the fire system inside the code can be programmed to smoke, are not equipped with a buzzer, that is, there is no sound, after the alarm, will be flashing lights, will transmit signals to the host; the second is the independent smoke, 9V battery-powered, this smoke must have a buzzer, the alarm, the scene has sound and light, so the separate smoke is not allowed to take out! Buzzer; Third, the switch quantity/relay smoke sense (multi-wire smoke sense / 4-wire smoke sense), mainly used and security system supporting (burglar, monitoring, fire shutter system, etc.), this type of smoke sense manufacturers are generally factory with a buzzer, if you do not need the sound, you can ask the manufacturer to remove the buzzer. These products, when exported, is not with a buzzer. If the individual operation to remove the buzzer sound, you need to report the smoke sense to remove, find the buzzer wiring, cut off on it. This is not recommended for non-professionals.
How to change the smoke detector battery?
On the back of the Smoke and carbon monoxide alarm, we find the snap switch and turn it counterclockwise to open the battery, and we snap the battery cover open to change the battery.
Why is my smoke detector beeping
Same as question 1
How to stop smoke detector from beeping?
1. There may be dust, mosquitoes, and insects in the smoke alarm, its needs to be cleaned often, especially if placed in a relatively large place of dust, dust.
2. If there are small insects in the smoke maze, it will also affect the chip sensing, causing false alarms.
3. It may be battery Undervoltage; wireless alarms are different from traditional wired products and need to be checked manually one by one often for Undervoltage.
4. Smoke alarm itself has a self-inspection, under-voltage alarm function; when the alarm has been ringing, it may be the battery under-voltage.
5. Open your windows. Then install a fan near the oven to blow smoke out of the window. Cover the smoke detector with a plastic bag and tie a rubber band around it. When you do this, there are two things to keep in mind.
(1) Make sure you know what you are doing.
(2) Don’t leave your stove, oven, etc. Because if there is a fire, you may need a smoke detector. While the smoke detector is still going off, try fanning the smoke detector from a close distance. This will push out all the smoke around the detector. The alarm will go off within 10 seconds.
How to stop a smoke detector from chirping without battery?
If the smoke detector has been used for a long time, you do not have change the battery; you need to pay attention to the smoke alarm and replace the battery according to the instructions so that it can return to normal.
how to turn off smoke detector?
Smoke detector can not be closed normally. A safety protection device is not manually closed, only to break its alarm horn or directly cut off the power supply; if the smoke alarm is a strange sound, refer to the following methods.
Smoke alarms also have the following causes, after the exclusion will not ring:
1, Battery power supply. The battery will also make a chirping sound about every minute when it is almost used up (different models will vary in interval and sound, but all have a power shortage warning function), issued by a single, short sound. About every minute will make such a sound.
Solution: If the fire alarm is intermittent, such a sound, you can replace the battery.
2. Dust: If the smoke detector is constantly emitting alarm sounds, then it may be that too much dust has accumulated in the smoke and fire alarm.
Solution: It is time to consider replacing the smoke alarm or cleaning it. When cleaning the fire alarm, vacuum the end of the vacuum cleaner close to the opening around the smoke detector and vacuum it one by one. This will remove all the dust that has accumulated in the smoke alarm.
How to install smoke detector?
Every 25-40 square meters should install a smoke sensor, important equipment above 0.5-2.5 meters installed smoke sensor.
Select a suitable installation area with screws to fix the fixed seat, the smoke sense sub-line color connection, and spin on the appointed chair.
The installation bracket hole in the ceiling or wall draws two holes.
Drill two holes by the two holes.
Stuff two plastic waist nails in the two holes, and then press the back of the mounting bracket against the wall.
Insert and tighten the mounting screws until the mounting bracket is firmly withdrawn from the bottom.
The detector is an airtight device and does not allow opening; please insert the battery into the compartment at the back of the unit.
Have the back of the detector against the installation position port and turn clockwise. And be sure that the two screw heads have been given to sliding into the waist-shaped hole.
Gently press the test button to see if the detector works properly.
How to test smoke detector?
We will publish a new article to answer this quesiton.
