Photoelectric Smoke Detector Fire Alarm Battery-Operated 2 Pack

Advantage 1.The smoke alarm with test button allows you to test the unit's functionality. 2.It features a low battery alert to remind you when to change the battery and has a missing battery guard to ensure that a battery is placed inside the alarm. 3.The side battery drawer slides open for easy battery replacement. A blinking power indicator on the unit confirms that it is receiving power. 4.The alarm contains an optional pin to lock the battery and unit in place for tamper resistance. 5.It can be mounted on either the ceiling or the wall and can be used in mobile homes and RVs. Attention1.The Smoke Detector contains the test button.Flickering power indicator,When the red LED light flashes for 32 seconds, it indicates that the smoke alarm is running normally. 2.When the alarm senses products of combustion and goes into alarm, the red LED will flash rapidly (one flash per second)..The rapid flashing LED and pulsating alarm will continue until the air is cleared or the test button is released. Specifications: 1.DC 9V battery operated 2.Photoelectric chamber for early detection from all directions 3.Loud>85dB (A) alarm signal @3M 4.Flash alarm indicator (red LED). 5.Test button for easy recommended monthly testing 6.Low battery signal 7.Safety clip feature, does not allow mounting of smoke alarm without battery installed 8.Ceiling mounting 9.Easy to install with mounting bracket 10.5 years prodcut life time