The VS-AVT-C08-L10 VeriSafe Absence of Voltage Tester is the first-of-its-kind permanently mounted voltage tester for use in 3-phase AC systems up to 600 V, that determines the absence of voltage with just a push of a button. Activating VeriSafe performs an absence of voltage test before opening the panel, helping prevent possible exposure to electrical hazards, improving safety, and reducing downtime risk. Includes AVT tester equipped with 10' sensor leads, 8' system cable, and an industrial Lithium battery.