Klein Tools CL220 400A Clamp Meter is an auto-ranging TRMS digital clamp meter designed for electrical maintenance, HVAC service, field measurement, panel inspection, and troubleshooting applications. The device measures up to 400A AC current and non-contact voltage detection through the clamp, while the test leads allow measurement of 600V AC/DC voltage, resistance, and continuity. With Type K thermocouple support, it can also measure temperature, making it especially useful for HVAC and service applications. Auto-ranging True RMS measurement technology provides accurate and reliable readings across different electrical loads. The backlit LCD display allows easy reading in low-light conditions, while the durable body, CAT III 600V safety rating, and 2 m / 6.6 ft drop protection make it suitable for professional field use. Supplied with a carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instruction manual, and 3 AAA batteries, the Klein Tools CL220 is a compact, practical, and reliable measurement solution for electricians, maintenance technicians, and HVAC professionals.

Product Features

• Clamp meter measures AC current and NCVT with the clamp, AC/DC voltage, resistance, and continuity with the test leads, and temperature with a thermocouple.
• Non-contact voltage tester integrated into the clamp jaw.
• Backlit LCD display for easy viewing in low-light conditions.
• Auto-ranging True Root Mean Square (TRMS) measurement technology for accuracy.
• Test lead holder on the side of the clamp and rear mount for attaching an optional magnetic hanger, 69445 or 69417, for hands-free use.
• Measures temperature with a Type K thermocouple probe.
• Features auto range, hold, data hold, and maximum value functions.
• Auto power-off after 10 minutes to help preserve battery life.
• Includes carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instruction manual, and 3 AAA batteries.
• Low battery indicator and easily accessible battery compartment.
• Built to be durable and withstand drops from 2 m / 6.6 ft.
• CAT III 600V, Class 2, double-insulated safety rating.
• Meets requirements for use in basic and controlled electromagnetic environments such as residential, office, and light industrial settings.