The Start Judge SJ2 is a false start system for track & field to monitor the start of running competitions up to 400 m. It consists of the Start Judge transport cart SJT2 with integrated controller and battery. The transport cart can store the complete system. The sensors SJS2 are mounted on each starting block. The integrated loud speaker system enables the starter to give commands to the athletes. The start tone (simulated start shot) is released through the speaker integrated in the start sensor and the BANG. By this, all runners can hear the start tone at the same time. With a radio push button WTN-PB one can move around and still trigger a false start at any time.

Systems are available in two version: cable or radio.


The SJ2 system can include (different for cable and wireless version):

  • SJT2 - transport cart with integrated controller and battery
  • E-START - electronic start gun
  • E-START W - electronic start gun wireless
  • SU3 - Start Unit
  • HS3-2 - headset
  • BANG-HS - wireless headset
  • BANG - loud speaker system
  • WTN-PB - radio push button
  • 199-20 - connection cable
  • KT150H - cable reel field telephone cable
  • KT313-30 - cable reel connection cable
  • 000-01 - start cable
  • STAMA - starting blocks
  • SJS2 - sensor for starting block
  • 139-xx - connection cable between starting blocks

homologated by the IAAF

  • Dokument
  • Detailed summary of all ALGE-TIMING products.
  • BANG2 Leaflet
  • Detailed listing of Track & Field products.
  • Certifcation of timing devices by Alge-Timing
  • Start devices used at Track & Field
  • Concentration clock for Track & Field
  • False start system SJ2 Leaflet
  • Dokument
  • SJ2 Manual
  • cable installation
  • mobile cable installation
  • Dokument
  • Schema for Track and Field with false start system
  • Start Judge 2 system comparisation
  • Full schema for Track and Field
  • Schema for false start system in track & field
  • Schema for false start system in track & field with radio
  • Simple schema for Track and Field
  • Simple wireless false start training system
  • Download
  • V21.6.2.0

    Control Software for the Start Judge 2 System.

    Minimum Display resolution 1280x1024.

    Available Languages EN, DE, FR, IT, ES, RU, PL, CS, HU
    Available for ... WinVista, Win7, Win8.x, Win10
  • Download
  • V21.61

    This is the firmware for the SJS2. This are the sensors of the SJ2 system. Use the SJC2 Software for update the SJS2. The Firmware must be extracted to the data folder (documents\SJC2)

  • Download
  • V2.12.36.4

    USB driver for TimeManager. Install this driver first, then connect the device.

    Available for ... Win7, Win8.x, Win10

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