DAYTECH Smoke Detector Sensor Wireless Independent Fire Smart Alarm Sensor With Battery
【Product Introduction】
This product named Photoelectric detector detects the smoke by a couple of infrared diodes.
The principle of detecting is granule in the smoke can reflect infrared light.Infrared diodes are placed in the special chamber.The chamber can shield external light,but don’t affect the smoke into it.
It reacts very quick to visible smoke released by smoldering fire and flaming fire, and suitable for fire alarm in house, factories, shopping malls, restaurants, office buildings, banks, libraries, etc.
1【Main features】
• Attractive and modern design suitable for residential and commercial applications
• Dustproof,mothproof,anti-light interference design
• Superior detection sensitivity,MCU processing,eliminate false alarm
• More than 2 year battery life (according to the battery type) and easy battery replacement
• Sound&flash once a fire sensed(smoke, low battery)
• Loud (100db) alarm sound at 3m (10ft)
• Simple wall or ceiling installation, with bracket
4【Specification】
1.working voltage: DC9V
2.current: Quiescent current≤12uA Alarm current ≤ 20mA
3.alarm loudness：≥85dB/3m
40normal condition：LED（red） flashes every 43S
5.alarm mode：sound/light（constantly）
6.low battery test：＜7.35V make an alarm sound every 43 seconds
7.working temperature：-10℃~+40℃
8.ambient humidity; ≤95%RH（no condensation）
Notes:
1.The product is not suitable to be installed in kitchen, bathroom or other places where it’s high-temperature and humid.
2.There shouldn’t be any obstructions that block the light or sound in front of the product.
3.If the battery is installed in reverse polarity, the product can’t work properly and it may be damaged.
DAYTECH SM21 Smoke Sensor Wireless Smoke Detector Fire Detector Photoelectric Battery Powered LED Indicator & Silence Button Low Battery Alert Fire Alarm Protection for Hotel Restaurant Clinic Hospital Church School Work House Hotel Factory Mall VMI
