The Alarm Controls TS15 is a request to exit station with a pneumatic time delay. The unit is mounted on a narrow 1.75" stainless steel wallplate labeled PUSH TO EXIT and a 1/4" button surrounded by a guard ring. Also known as -Alarm Controls Corp. Pneumatic Time Delay, 1NO-1NC, Push to Exit Label, 20 to 60 Second, 10 Ampere at 28 Volt DC, With Guard