Exit Door Alarm, Finish Unfinished, Cylinder Type Mortise, Alarm Type Horn, Inside Keyed Cylinder Type Mortise, Activated By Reed Switch/Magnet, Alarm Duration 30 sec, 3 min or Continuously, Door Handing Non-Handed, Body Thickness 1/8 in, Body Dia. 5 3/8 in, Body Length 5 3/8 in, Body Height 2 in, Body Width 5 3/8 in, Decibels 105 dB, Power Source 12/24V DC, 0.05 Amps, Housing Material Polycarbonate, Standards CE, FCC,IC, For Use With STI AED Cabinets