Smoke Detector, Battery Operated Smoke Alarm with Photoelectric Technology, UL Listed Fire Alarms Smoke Detectors with LED Indicator and Test Button (4 Pack)

Accurate & Sensitive: The photoelectric smoke alarm adopts optimized photoelectric technology, which can more sensitively, quickly, and as it should be measure smoke levels. When smoke or fire is detected, the red indicator light of the detector immediately flashes within a range of 3 meters, emitting an alarm sound of 85 decibels.
Test & Mute Button: The fire alarm smoke detector has a silent test button. Before the use of the test smoke alarm, observe whether the battery of the fire alarm smoke detector is running generally by pressing the test button. When the battery level of the smoke alarm is too low, the detector will sound a low battery alarm.
Secure & Reliable: The fire alarm smoke detector not only uses high-quality flame-retardant ABS material and an ultra long lifespan battery, but also blocks external interference in the appearance design to ensure detection accuracy and ensure the normal operation of the photoelectric fire alarm detector.
Easy Installation: Our smoke detectors are mainly divided into two types: adsorption top type and adhesive top type, both of which are equipped with screws and brackets. The installation operation is simple and can be completed in a couple of minutes. In addition, the fire alarm smoke detector is not hardwired, so you’ll install it anywhere you wish to have.
Multi-occasion Use: This smoke detector does not contain any radioactive substances. It will have to be installed in every room (except for for bathrooms and kitchens), decorated lofts and basements, schools, warehouses, shops, and other enclosed areas to make sure that everyone can hear the alarm sound and respond.