The Gardner Bender Digital Clamp Meter measures current up to 600A AC, voltage to 600V AC/DC and resistance to 1M ohms. This versatile tool features an easy-to-read LCD display and data-hold functionality for easy retrieval. cETLus listed with CAT III 300V and CAT II 600V ratings. It is durably designed with a 6 ft. drop- and 150 lb. crush rating. Powered by only 9V batteries (not included).