Thru-beam sensor
The light beam coming from the light emitter (with visible red light or invisible infrared light) reaches the light receiver. If a person or vehicle interrupts the light beam, the corresponding switching signal can prevent dangerous closing movements of automatic gates.
Through-beam light barriers are available in many designs, including those for very long ranges.
Suitable connection cables with coupling for the plug versions can be found in the accessories under Connection Cables, mounting brackets under Mounting Aids.
The battery light barrier, where the transmitter is powered by batteries, allows for uncomplicated electrical connection only on the receiver side, similar to reflex light barriers.
