The Milwaukee 221720 Digital Multimeter is a handheld, CAT III rated device designed for precise measurement of DC and AC voltages, as well as current up to 10 Amps. With features such as auto-ranging, backlight, data logging, and a bar graph display, this multimeter provides accurate readings with its True RMS capability. The digital display offers a resistance range of 6mV to 600V AC and 600mV to 600V DC, making it a versatile tool for professionals in the business and industrial sector who require reliable test meters and detectors.