Summit Doorware Mortise Lock Kit for Detex Alarm Locks – 1-1/8″ SC1 Keyway Mortise Cylinder with Threaded Ring – Fits Detex EAX500, EAX300, V40 EB, EAX2500 Exit Alarm Locks. Compatible with Detex Alarm Lock Models This mortise lock kit is designed for exit alarm devices including Detex EAX500W, EAX500, EAX300, EAX300W, V40 EB, EA2500, and EAX2500 systems.