The Alarm Controls TS-9T is a request to exit timer mounted on a 1.75" stainless steel wallplate. The unit features a green rectangular pushbutton labeled push to exit and a high brightness LED. The timer will activate when the pushbutton is depressed and additional activations of the switch wil re-start the timer. Also known as -Alarm Controls Corp. TS9 WITH 30 SECOND TIMER - AC-TS9T