Professional 12v Vehicle Mounted Proving Unit With Volt Detector

  • Proves two-pole testers, multimeters, test lamps and single-pole testers
  • Ramps up to 690V then slowly decays for checkingproving through the entire range
  • The first proving unit with a true AC output
  • Supplied with 3 metres twin cable to hardwire to vehicle electrics
  • Compact design
  • Proving unit terminals become closed circuit at the end of the test cycle to prove the continuity setting on some two pole testers