Complete Home Protection According to US data analysis, a family fire begins every 38 seconds. The faster you know about the fire, the sooner you start moving your family, and the smoke alarm at work reduces the risk of home fire deaths by 50%. Advantage 1.The smoke alarm with test button allows yo...

Test the alarm First: Step 1: press the test button for 5s (A single silence and test button eliminates confusion and allows you to silence and test the alarm easily) Step 2: the unit will sound 4 beeps every 5s twice & Red LED flashes & LCD display "000" (3 min), that shows the unit in a normal sit...