Klein Tools CL800 is an automatically ranging true root mean squared (TRMS) digital clamp-meter that measures AC/DC voltage, resistance, continuity, frequency, capacitance, and tests diodes via test-leads, and temperature via a thermocouple probe. It also features a Low Impedance (LoZ) mode for identifying and eliminating ghost or stray voltages. Klein Tools Test and Measurement product line was exclusively designed from the ground up by electricians for electricians. Years of field research, combined with extensive input from electricians across America, inspired the development of meters and electrical testers loaded with innovative, time-saving features. Built to withstand a 6.6-foot (2m) drop. Low battery indicator and easily accessible battery compartment. Operating temp: 32-degree F to 104-degree F (0-degree C to 40-degree C). Operating altitude to 6562-foot (2000m). Includes carrying pouch, test leads, thermocouple with adapter and batteries. Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857. Voltage - 1000V AC, 1000V DC