UEI DL479 True RMS Clamp Meter 600A AC for HVAC/R measures up to 600V DC, 750V AC, 600A AC, DC microamps up to 2000µA, and resistance measurements up to 60M?. The UEi DL479 features non-contact voltage detection, true RMS measurements, diode testing, low battery indication, a built-in worklight, backlight, capacitance testing, temperature measurements via type k thermocouple, a convenient magnetic mount, data hold, and more.