Camden 1" push button switches are designed to control electric locks & strikes, magnetic locks, automatic pedestrian & overhead doors. They may also be used for shunting, bypassing alarms, request to exit, timed functions and many other applications. camden switches are versatile and can be supplied in various logos and languages to suit any commercial, industrial or residential application. Also known as -Camden Door Controls U.S NRW SWT, SPDT MOM, PUSH TO EXIT - CM-2507