240V Proving Unit for Neon Voltage Indicators A handheld, battery powered proving unit able to provide a nominal 240Vdc, 2mA source to prove the integrity of neon type test voltage indicators<BR/>For safety, voltage indicators should be checked for correct operation from this known voltage source before and after every use<BR/>The unit is housed in a compact ABS plastic case and fitted with a belt clip for convenience<BR/>An LED is used to indicate battery condition