Klein Tools CL800 Electrical Tester 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.Warnings Read, understand and follow all instructions, cautions and warnings attached to and /or packed with all test and measurement devices before each use. Do not use the meter during electrical storms or in wet weather, and do not use the meter or test leads if they appear to be damaged. Before each use verify meter operation by measuring a known voltage or current. Do not attempt to measure resistance or continuity on live circuits. Features CAT IV 600V, CAT III 1000V, Class 2, Double insulation safety rating Features Low Battery Indicator and Auto Shut Off Low battery indicator and easily accessible battery compartment Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations Thermocouple probe measures temperature Test leads measure AC/DC voltage, resistance, continuity, frequency and capacitance and tests diodes Built to withstand a 6.6-Foot (2m) drop Low Impedance (LoZ) mode for identifying and eliminating ghost or stray voltages Operating temp: 32-degree F to 104-degree F (0-degree C to 40-degree C) Clamp Meter with automatically ranging true mean squared (TRMS) technology for increased accuracy Includes carrying pouch, test leads, thermocouple with adapter and batteries Operating altitude to 6562-Foot (2000m) Current: 600A AC; 600A DC Voltage: 1000V AC; 1000V DC Capacitance: 6000b5F Resistance: 60MO Frequency: 1Hz - 500 KHz Temperature Range: -14b0F to 1000b0F (-26b0C to 538b0C) Safety Rating: CAT IV 600V; CE Certified; Class 2; Double Insulation Drop Protection: 6.6 ft (2 m) Operating Temperature: 32b0F to 104b0F (0b0C to 40b0C) Operating Altitude: 6562 ft (2000 m) Measurement Types: AC/DC Voltage, Resistance, Continuity, Frequency, Capacitance, Diode Test, Temperature Technology: Auto Range True RMS (TRMS) Low Impedance Mode: Yes Jaw Size: 1.38 in (3.5 cm) Overall Length: 9.09 in (23.1 cm) Overall Width: 3.81 in (9.7 cm) Overall Height: 1.55 in (3.9 cm) Weight: 0.7810 lbs Display: 6000 Count LCD Display Size: 1.6 in x 1.04 in (4.1 x 2.6 cm) Width: 3.82 in Height: 1.54 in Depth: 9.09 in Batteries: 2 x AAA Included Accessories: Digital Clamp Meter; Carrying Case; 41 in (1041.4 mm) Test Leads; Thermocouple with Adapter; Batteries; Carrying pouch; test leads; thermocouple with adapter; batteries InstructionsCL800_Instructions_web.pdfDownloadsVideo DownloadSafety Data SheetSpec Sheet