Ecoey Smoke Alarm Fire Detector with Photoelectric Technology and Low Battery Signal (Battery Include), Fire Alarm with Test Function for Home, Bedroom, FJ136GB, 4 Packs

Accurate & Sensitive: The small size smoke alarm adopts photoelectric technology to detect smoke, which is more sensitive to light smoke and slow smoldering fires and more quickly to remind you. Keep your home protected 24/7
TEST BUTTON: Please test the fire detector once a month. If red LED flashes with “chirp” each 30 seconds, it’s low battery signal, please change battery in 7 days. Small size, DIA 3.3 inch. If in case you have any problem with smoke alarm, please contact us
Easy Installation: The smoke detector can easily install with mounting bracket. No hardwired anymore and you’ll be able to install it wherever you wish to have, aside from bathroom and kitchen, keep 3 ft away from the kitchen, bathroom, or other high air go with the flow areas
Sound & LED Warning: When the fire alarm detects smoke or detect combustion particles in the air, it’ll alert in 85 dB and the red LED will flash abruptly to remind you to check. If fault, please clean dust or smoke inside smoke alarm with fan
Home Protection: According to US data analysis, a circle of relatives fire begins each 38 seconds. The faster you know about the fire, the sooner you start moving your circle of relatives, working fire detector reduces the risk of home fire deaths by 50%