HOLDPEAK 570H Dual Display Digital Auto-Ranging Clamp Multimeter With Diode And Continuity Test &ndash;Digital Handheld Clamp Meter Multimeter With Data Hold Backlight Digital clamp meter measures alternating current (AC) to 1000A, direct current (DC) voltage to 1000V and AC voltage to 750V, resistance to 20Mohms Average-sensing meter provides accurate readings when measuring linear loads, where the current or voltage has a sinusoidal waveform Transformer clamp with 1" (26 mm) jaw opening measures current and frequency without touching or interrupting the circuit K-type thermocouple probe measures temperature Meets International Electrotechnical Commission (IEC) safety standard 61010 and is certified for category III installations up to 600V