This is a dual impedance true RMS digital multimeter integrating a variety of measurements like AC/DC voltage, AC/DC current, frequency, duty ratio, resistance, capacitance, temperature, diode, continuity, NCV, VFD, inrush current, etc.. And there are more functions like last data hold, flashlight, Max./Min./Relative value, Celsius/Fahrenheit degree, and zero key. Features: CLAMP MULTIMETER: Measures inrush current, VFD current/voltage, AC/DC current, AC/DC voltage, frequency, duty ratio, resistance, continuity, diode, capacitance, temperature, non-contact AC voltage (NCV) detection, and live detection. WIDE OPENING JAW: Opening jaw capacity is 40mm, wide enough to measure without disturbing the circuit. LOUD BEEP: NCV sensor send out audible and visual alarm once received electromagnetic signal. MORE FUNCTIONS: Features data hold, flashlight, low battery display, Celsius/Fahrenheit degree, Max./Min./Relative value, and Zero(reset) key. SAFE TO USE: Designed and conforms to IEC61010-1, CAT III 1000V, safe and reliable. AUTO-OFF: Auto power off within 15 minutes if there is no operation, helps conserve the battery. MULTI TESTER: Comes with 2 test leads and a thermocouple to be used as a multitester. Note: *MUST read the user manual carefully before use for safety. *Battery not included. Parameters: Display: 6000 count Clamp Opening Size: 40mm Auto-off: approx. 15 minutes Max. Voltage Between Terminals and Earth Ground: AC750V or DC 1000V Specifications: Brand: HABOTEST Material: ABS Color: Black and Red Battery: 2pcs, 1.5V, AAA alkaline battery (batteries not included) Item Size: 24*8*4.5cm / 9.44*3.14*1.77in Item Weight: 311g / 10.97oz Package Size: 27.5*13.5*5.5cm / 10.82*5.31*2.16in Package Weight: 620g / 21.86oz Packing List: 1 * Digital Clamp Meter 1 * Thermocouple 2 * Test Lead 1 * User Manual(English)