Smoke Detector Fire Alarm

Features:
Equipped with photoelectric sensor, providing 24/7 protection with 360 degree access.
Quick respond and alarm with loud sound output of 85dB at 3 meters when danger detected.
Smoke alarm with flashing red LED, high sensitivity, with test and silence button.
1 * 9V 6F22 battery (NOT INCLUDED) operated for convenience, low power indication, flame-retardant ABS material.
It can be quickly installed in your home without requiring an electrician, no wire needed, not hardwired.
Sleek profile with glossy white, easy to integrate with home, office, hotel, school, factory, etc..
Note: avoid installations in places with stagnating smoke, heavy dust, heavy water mist, heavy oil mist, great humidity (95%RH) and high wind speed (5m/s).