Klein Tools CL210 Digital Clamp Meter 400A AC Current Auto Ranging AC/DC Voltage measures AC current up to 400A and AC/DC voltage up to 600V using its clamp and up to 20MΩ resistance via test leads. The Klein Tools CL210 features an easy-to-read backlit display, auto-ranging, data freeze, temperature measurements via thermocouple, automatic shut-off, audible continuity, and more. The Klein Tools CL210 can easily handle any tough work environment.