This is a dual impedance RMS digital multimeter integrating a variety of measurements like AC/DC voltage, AC/DC current, frequency, duty cycle, 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:CLIP MULTIMETER: Measures inrush current, VFD current/voltage, AC/DC current, AC/DC voltage, frequency, duty cycle, resistance, continuity, diode, capacitance, temperature, non-contact AC voltage (NCV) detection and live detection. WIDE OPENING JAW: The capacity of the opening jaw is 40mm, wide enough to measure without disturbing the circuit. LOUD BEEP: The NCV sensor sends an audible and visual alarm once the electromagnetic signal is received. MORE FUNCTIONS: Includes data hold, flashlight , low battery display, Celsius/Fahrenheit, Max./Min./Relative value and Zero (reset) key. SAFE TO USE: Designed and compliant with IEC61010-1, CAT III 1000V, safe and reliable. AUTO-OFF: Automatic power off within 15 minutes if there is no operation, helps save battery. MULTI TESTER: Comes with 2 test leads and a thermocouple to use as a multi-tester. Note: * MUST read the user manual carefully before use for safety reasons. * Battery not included. Parameters: Display: 6000 points Clamp opening size: 40 mm Automatic shutdown: approx. 15 minutes Max. Voltage between terminals and ground: AC750V or DC 1000V Interval Resolution Precision DC current (MAX current: 1000A)< tr> 60A 0.01 A (2.5% reading + 8) 600A< /td> 0.1 A 1000A 1A AC Current (MAX Current: 1000A, True RMS) Frequency Range: 0.1 ~ 600A: 40Hz ~ 400Hz 600 ~ 1000A: 40Hz ~ 60Hz 60A 0.01 A (2.5% reading + 8) VFD: (5.0% reading + 10) INRUSH: (5.0% reading + 10) 600A 0.1 A 1000A 1A Continuous voltage Input impedance: 10M (LoZ: 300k) Overload protection: AC750V / DC1000V Maximum input voltage: AC750V / DC1000V 600 mV 0.1 mV (0.5% reading + 5) 6V 0.001 V 60 V 0.01 V 600 V 0, 1 V 1000 V 1V (0.8% reading + 5) AC Voltage Input Impedance: 10M (LoZ: 300k) Overload Protection: AC750V / DC1000V Voltage maximum input: AC750V / DC1000V Frequency range: 40Hz ~ 1kHz, True RMS 600 mV 0.1 mV (0.8% reading + 5) 6V 0.001 V< td> 60 V 0.01 V 600 V 0.1 V 750 V 1V (1.0% reading + 5) VFD (750 V) 0.1 V (2.0% reading + 5) Resistance< /strong> Overload protection: 250 V 600 0.1 (1. 0% reading + 5) 6 k 0.001 k 60 k 0.01 k 600 k 0.1 k 6 M 0.001 M 60 M 0.01 M Diode It displays the approximate forward voltage value of the diode. The continuous direct current is approximately 1.5 mA; Reverse DC voltage is about 3V; Overload protection: 250V Continuity &lt;approx. 30, the buzzer sounds and the LED indicator lights up Test voltage Approx. 1V Overload protection: 250 V Capacitance Overload protection: 250 V< /tr> 10nF 0.001 nF (4.0% reading + 5) 100nF 0.01 nF 1000nF 0.1 nF< td> 10 F 0.001 F 100 F 0.01 F 1000F 0.1 F 10mF 0.001 mF 100mF 0.01 mF (5.0% reading + 10) Frequency / duty ratio Overload protection: 250 V 10 Hz 0.001 Hz (1.0% reading + 3) 100 Hz 0.01 Hz< td> 1000 Hz 0.1 Hz 10 kHz 0.001 kHz< tr> 100 kHz 0.01 kHz 1000 kHz 0.1 kHz 10 MHz 0.001 MHz (3.0% reading + 3)