Emergency Exit Door Alarm Finish Brushed Chrome Cylinder Type Rim Arm Type Paddle Alarm Type Audible/Annunciation Inside Keyed Cylinder Type Rim Siren Style Continuous Door Handing Non-Handed Body Length 8 1/2 in Body Height 3 1/4 in Body Width 18 in Decibels 99 dB Power Source 9V Battery Standards ADA and NYC CFM UL 198G For Use With CER Rim Cylinder and Replacement BP9 Battery Pack Includes Batteries