Exit Door Alarm, Finish Metallic Silver, Arm Type Keyless Control, Alarm Type Audible/Annunciation, Siren Style Pulsed and Steady, Sweep, Activated By Cover Removal, Alarm Duration 15 sec, Door Handing Non-Handed, Body Length 9 in, Body Height 2 3/8 in, Body Width 2 1/2 in, Decibels 95 dB, Power Source 9V Battery, Includes 9V Alkaline Battery