Klein Tools CL390 is an automatically ranging true root mean squared (TRMS) digital clamp meter. It measures AC/DC current and NCVT via the clamp, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, and diodes via test leads, and temperature via a thermocouple probe. It features a high visibility, reverse contrast LCD display that optimizes view ability both in dark or bright ambient lighting.

Klein Tool Model No. CL390

• Test lead holder on side of clamp and optional magnetic hanger for meter for hands free operation
• Non-contact voltage tester integrated into the clamp jaw
• High-visibility reverse contrast LCD display for improved view ability in all ambient lighting conditions
• Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy
• Measures AC/DC current and NCVT via clamp and AC/DC voltage, resistance, frequency, DC microamps, capacitance, duty cycle, diode test, and continuity via test-leads, and temperature with thermocouple
• Measures temperature with a K-Type thermocouple probe
• Max/Min, Rel/Zero and Data Hold capability
• Auto-power off after 10 minutes to conserve battery life
• Includes a carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries
• Low battery indicator and easily accessible battery compartment
• Built to withstand a 6.6-Foot (2 m) drop
• CAT III 600V, Class 2, Double insulation safety rating
• Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations