Klein Tools CL320 400A AC Auto-Ranging HVAC Digital Clamp Meter is a handheld instrument that clamps around a conductor to read AC current with a 24 mm jaw and deliver true RMS readings up to 400 A. It also measures AC/DC voltage via test leads, DC microamps, resistance, continuity, frequency, capacitance, and diode tests, and uses a thermocouple probe to provide temperature data, with Auto Range for quick setup and a data-hold/Max-Min function for capturing fluctuations. Built for safety, the CL320 carries a CAT III 600 V rating with double insulation and is rugged enough to withstand a 6.6 ft (2 m) drop. The kit typically includes a carrying pouch, test leads, a thermocouple with adapter, and batteries for immediate use.
