Triplett 1101-B (1101) Compact AC/DC Digital Multimeter is a 3-1/2 digit (1999 count) compact digital multimeter with a backlit LCD display. At its core is an LSI (Large Scale Integration) integrated circuit that uses dual slope A/D conversion for stability and accuracy. It offers a large variety of measurement features including AC/DC Voltage, DC Current, Resistance, Continuity, Diode Test, and Temperature. The rubberized boot provides impact and drop resistance in a sleek ergonomic design, and the user-friendly Auto Power Off feature helps maximizes battery life. With an industry standard CAT II design, it provides resistance to damage from transient overvoltages in many demanding settings. The Model 1101-B is well suited for a variety of commercial and residential applications, including security, home theater, electrical, HVAC installations and more.