240V Proving Unit for Neon Voltage IndicatorsA handheld, battery powered proving unit able to provide a nominal 240Vdc, 2mA source to prove the integrity of neon type test voltage indicatorsFor safety, voltage indicators should be checked for correct operation from this known voltage source before and after every useThe unit is housed in a compact ABS plastic case and fitted with a belt clip for convenienceAn LED is used to indicate battery conditionNoteThis product will only work with test voltage indicators that have an input impedance of greater than 120k.Voltage Level IndicatorsA range of voltage testers each available in versions suitable for electronic or electrical applications.