Photo Eyes

Photo Eyes are typically used on driveway gates as a safety device to prevent gates from closing on a vehicle in its path. They are also used to prevent a gate closing on a person who may be between the gate and a fence or wall. This is known as an entrapment zone.

Photo Eyes come in two styles; Through Beam, which is a 2-piece unit consisting of a transmitter and a receiver and Retro-Reflective which combines the transmitter and receiver in one unit and "bounces" the beam back from a reflector.