Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy Measures AC current via the clamp, and AC/DC voltage, resistance, and continuity via test leads Wide jaw for measuring current in cables up to 3/0 sizes; accommodates cables of diameter up to 0.58" (14.7mm) Non-contact voltage tester integrated into the jaw Includes a carrying case, test leads and 2 x AAA batteries Jaw and Housing: CATIV 600V/CATIII 1000V; Electrical: CATIII 600V/CATII 1000V; Class 2, Double Insulation Backlit display for clear readings Powers off automatically after 15 minutes of non-use to conserve battery life Rugged Klein ''TOUGH METER'' is built to withstand a 9.9-Foot (3m) drop Low battery indicator and easily accessible battery compartment Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations