The photocell is with integrated WTN radio module (2.4 GHz).
The transmitter of the photocell sends a modulated infrared beam. The receiver checks the infrared beam and triggers an impulse for each interruption. All photocells can be universally used with a reflector or as sender and receiver photocell. The impulse transmission can be effected by radio and is compatible with all devices of the WTN series. Up to 15 different radio channels and 5 varying impulse channels are adjustable. The PR1aW can as well be connected by cable to the timing device.