The Klein Tools CL320 HVAC Digital Clamp Meter is the all-in-one diagnostic tool that professional electricians, HVAC technicians, and contractors rely on for fast, accurate measurements across a wide range of job site applications. With True RMS auto-ranging technology, it delivers precise readings on AC current up to 400A via the clamp jaw, plus AC/DC voltage, resistance, frequency, DC microamps, capacitance, duty cycle, diode testing, continuity, and temperature via K-Type thermocouple — all in a single meter. The integrated non-contact voltage tester (NCVT) in the clamp jaw adds an extra layer of safety when working around live circuits. A backlit LCD keeps readings clear in dimly lit panels and mechanical rooms, while the side test lead holder and optional magnetic hanger (Cat. Nos. 69445 or 69417) free up your hands for the work. Built to survive a 6.6 ft (2 m) drop and rated CAT III 600V, the CL320 is engineered for the demands of daily trade use in residential, commercial, and light-industrial environments.

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