The Keysight U1242A is a 4000-count handheld digital multimeter (DMM) that combines ease-of-use, practical features, and performance. With its high accuracy, the U1242A can measure up to 4½ digits (4,000 counts). It features a backlight LCD display, an AUTO/MANUAL range selection, built-in continuity buzzer, a diode test function, and overload protection. It also has a wide range of basic measurements such as AC/DC voltage, AC/DC current, capacitance, and frequency/period.