The Klein Tools CL810 True RMS Clamp Meter delivers accurate electrical measurements for professional electricians and maintenance technicians. Designed for demanding jobsite environments, it measures AC current via the clamp and provides full multimeter functionality including voltage, resistance, frequency, continuity, and temperature. The bright backlit display, durable construction, and intuitive controls make it a reliable tool for troubleshooting residential, commercial, and industrial electrical systems. Key Features True RMS accuracy for precise readings in noisy environments AC current measurement via clamp (up to 1000A) Full multimeter functions: voltage, resistance, frequency, continuity, temperature Low‑impedance (LoZ) mode to eliminate ghost voltages Bright backlit display for low‑light conditions CAT IV 600V / CAT III 1000V safety rating Durable, professional‑grade housing Auto‑range + data hold for convenience Basic Specs Model: CL810 UPC: 092644690009 AC Current Range: Up to 1000A Voltage Range: AC/DC Safety Rating: CAT IV 600V / CAT III 1000V Display: Backlit LCD Functions: True RMS, LoZ, continuity, resistance, frequency, temperature What’s Included Klein Tools CL810 Clamp Meter Test leads Thermocouple probe Carrying pouch User documentation