The ACA-6420 is a Passive infrared request to exit sensor. This is a "hands-free" option to exiting a door that has access control. The sensor can detect when a person is walking up to the door and can differentiate between a body and electrical interference or light. You can mount this exit sensor to the door frame, the wall or ceiling and it can be set from .25 to 60 seconds of hold time.
Accepts 12 to 24 VAC/VDC.