BK Precision 5492B Auto-Ranging, True RMS Benchtop Digital Multimeter, 12 Amp, 750VAC, 1000V, 120 Megaohms, 1 Megahertz Digital multimeter measures current, voltage, resistance, frequency, and period True RMS (root mean square) meter provides accurate readings when measuring linear or nonlinear loads where the current or voltage has an undistorted or distorted waveform 2- and 4-wire resistance measurements provide a range of accuracy Audible continuity sensor confirms a circuit conducts electricity, and diode test detects proper functioning of a circuits diodes Meets International Electrotechnical Commission (IEC) safety standard 61010 and is certified for Category I installations up to 1,000V and Category II installations up to 300V