HVAC Digital Clamp Meter, AC Auto-Ranging 400 AmpHVAC Digital Clamp Meter, AC Auto Ranging 400 Amp Clamp Meter measures AC 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 Non contact voltage tester integrated into the clamp jaw Backlit LCD for ease of viewing in low light Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy Test