Proving Units

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  1. Martindale PD240 Proving Unit

    £51.95

    £62.34

    • Used for detection of live voltage, and proving dead.
    • Suitable for use with digital multimeters and many two pole voltage testers.
    • Convenient pocket-sized, battery powered proving unit that produces a 240Vdc output. 
    • Flush-mounted pocket clip permits stable bench use when desired.
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  2. Martindale PD430 440V Universal 2 Range Proving Unit

    £84.95

    £101.94

    • Designed to enable voltage indicators to be fully checked.
    • Features a low 50V check as well as a high 440V check.
    • Compatible with the Martindale VI13700G & the new Martindale VI13700/2.
    • Suitable for use with any two pole voltage tester, with LED or LCD indication.
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  3. Martindale PD440 440V Proving Device

    £73.95

    £88.74

    • 440V AC proving device, designed to enable voltage indicators to be fully checked.
    • Compatible with the new Martindale VI13800 & the Martindale VI13700.
    • Used to check Drummond, standard multimeters & two pole voltage indicators.
    • Powered by either alkaline batteries or a 12V power supply.
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