The Extech EX205T is a True RMS digital multimeter, which provides truer AC readings when measuring distorted or non sinusoidal waveforms and noisy signals. This model is also auto ranging, which means it automatically displays readings with the proper decimal place location and maximum resolution. Featuring a large 2000 count, backlit dual LCD with easy to read digits, this multimeter measures AC, DC Voltage, Resistance, Diode Test and Continuity. The meter also makes use of a number of functions including input fuse protection, max hold, auto power off and data hold function. Product includes test leads, and battery.