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