PRODUCT INTRODUCTION
This product is a photoelectric smoke alarm, it is a smoke warning device. Photoelectric smoke alarms are more effective at detecting slow, smoldering fires that smolder for hours before bursting into flame.Such as cigarettes burning in couches or bedding.Please note, It can not defect gas, heat or flame. It can not prevent or put out fire. Once detect smoke,red led will flash rapidly and horn will sound alarm.Smoke alarms should be installed in all necessary places,such as living rooms,warehouses,basements, attics etc.