Exit Door Alarm Finish Metallic Silver Cylinder Type Mortise Alarm Type Audible/Annunciation Siren Style Pulsed and Steady Sweep Activated By Unauthorized Egress Door Handing Non-Handed Body Length 11 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