Life Safety Alarm with Strobe for AED Cabinet by JL Industries. Designed for JL Industries cabinets. Includes wiring for keyed on/off switch. 85dB alarm sounds when the cabinet door is opened and is deactivated when the door is closed or the key switch is turned off. Powered by a 9-volt battery (not included).The plug on the alarm acts as an alarm switch. When the plug is in the alarm is activated and will sound when the door is opened. When the plug is out the alarm is deactivated and will not sound when the door is opened.