The VeriSafe Absence of Voltage Tester is more than just a voltage Indicator! Voltage indicators warn of hazardous voltage, but cannot be used to confirm if equipment is de-energized. Absence of voltage testers are permanently-mounted test devices designed to verify that a circuit is de-energized prior to opening an electrical enclosure containing energized electrical conductors and circuit devices. Absence of voltage testers are new permanently-mounted test devices designed to verify that a circuit is de-energized [...]