BT-7 Resettable Glass Break emergency exit button, gives emergency exit by pressing the glass inwards in case of emergency which is preferred in places, particularly is required to arrange in accordance with the fire regulations. As the glass goes inside, it gives the output contact and the trigger remains pressed. It is reset and used again. It can be easily used with any type of turnstile, barrier, door, automation system with it’s plastic green colored outer casing.