The Triplett 9055 is a 3-3/4 digit (4000 count) high performance digital multimeter with an array of environmental functions. It offers over 50 measurement ranges including AC/DC Voltage, AC/DC Current, Resistance, Frequency, Capacitance, Temperature (Type K and ambient), Relative Humidity (RH), Light (LUX), and Sound (dBC). Additional features include an NCV Detector, Continuity, and Diode Test. The rubberized overmolded housing with built-in stand provides impact and drop resistance in a sleek ergonomic design, and the user-friendly Auto Power Off feature helps maximize battery life. With an industry leading CAT IV design, it provides superior resistance to damage from transient overvoltages in any demanding industrial settings. The Model 9055 is suited for a variety of industrial and residential applications such as security, home theater, electrical, HVAC installations and more. Includes test leads, alligator clips, Type K Temperature probe and 9V battery. 3 year warranty.