News & Events


PR1AW-R Photocell

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 BAA1.5/1
Impulse Device
  • 1x PR1AW-F
  • 1x F-WERKZ. 1


Yes, these devices are compatible. You can connect our photocells or startgates to your TAG HEUER timing device using a banana cable (000-xx). In such a case, the photocells are supplied by the internal battery. Other impulse devices such as a push button (032-xx) can also be connected.

Yes, you can connect your TAG HEUER photocells or startgates to our timing devices using a banana cable (000-xx). In this case, the photocells must be supplied with the internal battery.


Alpine Skiing - Newcomer

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Alpine Skiing - MT1 + Backup

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Whitewater Canoeing - MT1

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Uphill Races - MT1

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Mountain Biking - MT1

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Rally - MT1

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Ski Training - MT1

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Alpine Skiing - Training with Radio

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Alpine Skiing - Selftimer SF3

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Alpine Skiing - Speed

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Alpine Skiing - FIS Level 3

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Alpine Skiing - FIS Level 2

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Alpine Skiing - FIS Level 1

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Alpine Skiing - FIS Level 1 + Intermediate Time

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Alpine Skiing - Parallel

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SSD1 - Parallel

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SSD1 - Parallel + Delay

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SSD1 - Cross

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SSD1 - Team Cross

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Luge - Natural

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Cross Country Skiing - FIS Individual

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Cross Country Skiing - FIS Pursuit

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Cross Country Skiing - FIS Relay Mass Start

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Cross Country Skiing - FIS Sprint

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Freestyle Skiing - Aerials

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Freestyle Skiing - Cross

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Snowboard - Slalom Parallel

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Snowboard - Cross

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Snowboard - Slalom

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Snowboard - Slalom FIS

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Speed Skating - Radio

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Speed Skating - Wired

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Speed Skating - Pursuit

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Short Track - Wired

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Short Track - Radio

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Whitewater Canoeing - Slalom

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Whitewater Canoeing - Radio

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Mountain Biking - Cross Country

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Mountain Biking - Downhill

English (PNG, 266 KB) Deutsch (PNG, 271 KB)

Mountain Biking - Downhill Radio

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Road Cycling - Time Trial

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Road Cycling - Photo Finish

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Dog Agility - TIMY3

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Horse Racing - Simple

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Horse Racing - Advanced

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Show Jumping - TIMY3

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Show Jumping - Endurance

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Autocross - Laps

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Autocross - Speed Measurement

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Automobil - Slalom

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Rally - Level 2

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Rally - Level 3

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Rally - Level 4

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Alpine Skiing - Ski School

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Alpine Skiing - Training with MT1

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Snowboard - Cross Team

English (PNG, 381 KB) Deutsch (PNG, 375 KB)

Autocross - Sprint

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Athletics (Track & Field) - Acceleration

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