Low-cost, door alarm with piezo horn that sounds to warn of unauthorized use of a door Mortise cylinder required with standard Yale cam for Inside Key Control Wedge Alarm For Door Detex EAX-500SK1 GRAY Exit Alarm Surface Mount Battery Powered One Ms 1039s Magnetic Switch Gray Finish Detex Surface Mounted Ac/dc Powered Door Alarm Manual High-quality Detex products | Detex Exit Alarms & Hardware | UHS Hardware Detex EAX-300 Battery Powered Door Propped Alarm The EAX-2500 is designed for applications requiring a hardwired AC/DC alarm on secure doors. The alarm, with approximately 100dB, will sound when someone... Alarm can only be silenced by proper control key