Fire Alarms Smoke Detectors, Smoke Alarm Battery Operated,Fire Alarm with Test Button & Low Battery Signal, Photoelectric Technology Fire Detectors for Bedroom and Home (4 Pack)

FIRE ALARMS SMOKE DETECTORS: The smoke alarm adopts photoelectric technology to detect smoke. More sensitive to light smoke and slow smoldering fires and more quickly to remind you. Keep your home secure 24/7.
TEST BUTTON: “Test” button means that you can test the fire alarm once a month. Low battery signal makes you’ll know whether the alarm has sufficient power easily.
Sound & LED Warning: When the fire alarm detects smoke or detect combustion particles in the air, it’ll sound their alarms and the red LED will flash unexpectedly to remind you to check.
EASY INSTALLATION: The smoke detector can easily install with mounting bracket. No hardwired anymore and you’ll install it wherever you wish to have.
HOME PROTECTION: In keeping with US data analysis, a circle of relatives fire begins each 38 seconds. The faster 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%.