This compact clamp meter provides high resolution current readings up to 80A ac or dc. The backlit 4000 count display permits readings up to 4 digits or 1mA resolution. This provides far greater low current resolution than most traditional clamp meters which are typically designed for electricians rather than electronics use. Simply clamp the jaws around the conductor and the display reads the dc or ac current present. Voltage, resistance, continuity, frequency and diode testing are performed by connecting the included test leads to the banana sockets at the bottom of the unit. Features Two current ranges 4A, 80A 1mA resolution Backlit LCD One touch zero function 23mm jaw opening Auto power off Data hold function Test leads and carry case included 2x AAA battery included Cat III 600V Specifications DC Current 4.000 A DC ± (2.8% + 10 digits) 80.0 A DC ± (3% + 8 digits) AC Current (50/60Kz) 4.000 A AC ± (3.0% +10digits) 80.0A AC ± (3.0% + 8 digits) DC Voltage 400.0 mV DC ± (1.0% + 15 digits) 4.000 V DC ± (1.0% + 3 digits) 40.00 V DC ± (1.5% + 3 digits) 400.0 V DC ± (1.5% + 3 digits) 600 V DC ± (2.0% + 3 digits) AC Voltage 400.0 mV AC ± (1.0% + 30 digits) 4.000 V AC ± (2.0% + 5 digits) 40.00 V AC ± (2.0% + 5 digits) 400.0 V AC ± (2.0% + 5 digits) 600 V AC ± (2.0% + 5 digits) Resistance 400.0 Ω ± (1.0% + 4 digits) 4.000KΩ ± (1.5% + 2 digits) 40.00KΩ ± (1.5% + 2 digits) 400.0KΩ ± (1.5% + 2 digits) 4.000MΩ ± (2.5% + 3 digits) 40.00MΩ ± (3.5% + 5 digits) Capacitance 40.00nF ±(5.0% reading + 30digits) 400.0nF ±(3.0% reading + 5 digits) 4.000μF ±(3.5% reading + 5 digits) 40.00μF ±3.5% reading + 5 digits) 100.0μF ±(5.0% reading + 5 digits) Frequency 5.000Hz ±(1.5% reading + 5 digits) 50.00Hz ±(1.2% reading + 2 digits) 500.0Hz Sensitivity: 10Vrms min. @ 20% to 80% duty cycle 50.00kHz Sensitivity: 10Vrms min. @ 20% to 80% duty cycle 500.0kHz Sensitivity: 10Vrms min. @ 20% to 80% duty cycle 5.000MHz 10Vrms min. @ 20% to 80% duty cycle 10.00MHz 10Vrms min. @ 20% to 80% duty cycle Duty Cycle: 0.5 to 99.0% ±(1.2% reading + 2 digits) Pulse Width: 100μs - 100ms, Frequency: 5Hz to 150kHz; Sensitivity: 10Vrms min. Analog Output (for ACA & DCA range), 10mV/Amp (20KHz at ±3dB) Accuracy: ± ( 4.5% reading + 1mV ) Output Impedance: approx 3KΩ Physical Specifications Clamp Size Opening: 0.9" (23mm) approx Diode Test: Test current of 0.3mA typical; Open circuit voltage 1.5V DC typical. Continuity Check: Threshold