4 Pack Smoke Detector Fire Alarms 9V Battery Operated Photoelectric Sensor Smoke Alarms Easy to Install with Light Sound Warning, Test Button,9V Battery Included Fire Safety for Home Hotel(912-4)

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 secure 24/7
Photoelectric Technology&Material: Fire-Retardant ABS V0 Level. 9V Battery-Powered Photoelectric sensor Smoke Alarm. photoelectric technology which is optimized to detect slow smoldering fires which generate light smoke, little heat and may smolder from all directions for hours before bursting into flames.
Test Button: Test smoke alarm each week by pressing the test button in the midst of the cover for 5 seconds. Please change batteries when smoke detector inform low battery, smoke alarm “chirp” each 32 seconds and the red LED flashes at the same time
Sound & LED Warning: If fire alarm detects smoke or combustion particles in the air, it’ll sound in 85db and red LED will flash all of a sudden to remind each member 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, and the smoke alarm at work reduces the risk of home fire deaths by 50%
10 Years Warranty: If there are any problems with our products ,you’ll contact us ,we will have to reply you within 24hours as soon as imaginable.NOTE: Please test it once a month to make certain that the smoke alarm works properly. Please clean up the dust on the alarm each 6 months to prevent the smoke alarm from being clogged or blocked.