Detex EAX-300 Gray EAX-300 Exit Alarm Battery Powered Door Propped Alarm - Door Lock Replacement Parts - Amazon.com
Detex EAX-500 Grey Surface Mounted Exit Alarm Piezo Horn Detex Battery Powered Door or Wall Mount Exit Alarm, 2.10" W x 2.375" D x 7.70" L - Amazon.com
Surface Mount Door Alarm Set, DETEX EAX-500MC65 - Doorware.com