Exit Door Alarm Horn Siren 105dB

Exit Door Alarm Finish Unfinished Cylinder Type Key Lock Arm Type Key Control Alarm Type Audible/Annunciation Inside Keyed Cylinder Type Alike Siren Style Horn Activated By Reed Switch/Magnet Alarm Duration 30 sec 3 min or Continuously Door Handing Non-Handed Body Thickness 2 in Body Dia 5 3/8 in Body Length 5 3/8 in Body Height 5 3/8 in Body Width 5 3/8 in Decibels 105 dB Power Source 9V Battery 1 Amps Housing Material Polycarbonate For Use With Interior and Exterior Doors