Exit Door Alarm, Finish Metallic Silver, Cylinder Type Mortise, Alarm Type Audible/Annunciation, Siren Style Sweeping, Activated By Unauthorized Egress, 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, Standards Meets ANSI/BHMA A156.29, Includes 9V Battery