Klein Tools HVNCVT-2 Broad Range Non-Contact Voltage TesterKlein Tools HVNCVT 2 Klein's Broad Range High Voltage Non Contact Tester detects voltage up to 230kV AC in overhead conductors. The tester indicates the presence of voltage through multiple sensitivity levels with both audible and visual signals. Attach the tester directly to a hot stick or use the universal adapter to attach it to your shotgun. Use to check for the presence of voltage in overhead conductors or to find faults in cables 7 sensitivity