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PR1A Photo cell

Our photocell PR1a is a masterpiece of precision and performance with smallest possible dimensions.
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 photocell is also available with integrated WTN radio module (2.4 GHz). 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.
With its rugged and weatherproof casing and extendable cover slide both versions can be used indoor and outdoor in all conditions without compromise.


  • impulse accuracy up to 1/10,000 seconds
  • possible to use as reflector photocell (25 m) or as sender or as receiver part (150 m/500 feet).
  • battery or cable powered
  • possibility to synchronize two senders for main and backup operation
  • possibility to adjust the delay time manually
  • models PR1a: without WTN module
  • models PR1aW: with WTN module
  • both models available in different sets with varying accessories or without any accessories
2x AA Mignon
Battery Life
77 h
120 x 90 x 65 mm
272 g
  • 1x PR1A

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