The Yale SDA16-1 Stand Alone Door Alarm is designed to continually monitor the status of a door. When the door is opened without authorization, an alarm is triggered to alert the security violation. Yale SDA16-1 is ideal for emergency doors as well as stairwell doors and rear exit doors in retail environments. The Yale SDA16-1 can also be hardwired, easily complements existing hardware, making any opening alarmed.
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