Klein Tools Digital Clamp Meter AC Auto-Ranging 400 Amp The Klein Tools CL120 400A Digital Clamp Meter measures the AC current and AC voltage using the no-contact clamp and DC voltage using the included test leads. Equipped with a test lead holder to the side of the clamp and an optional magnetic hanger allows for hands free operation. The meter is capable of various functions including auto-range, hold, data hold, max value, and auto power off to conserve battery life. Electricians will appreciate the CL120's ability to measure up to 600 volts, covering everything you'll find on job. A backlit LCD screen and low battery indicator add to its quality of life features, alongside an included carrying case and 3 x AAA batteries. Its durable construction is built to withstand up to a 6.6ft (2m) drop, and meets the standard for operating in basic electromagnetic settings: residential locations, offices, and industrial sites.