HP‑42B Portable Digital Multimeter TRMS DC/AC Voltage/Current Resistance 6000 Counts Tester Condition: Item Type: Multimeter Material: ABS Color: As shown in the picture Out of Range Display: "OL" Maximum Display: 6000 Auto/Manual Range Function Auto-off Function: About 15 minutes after power-on, the meter will automatically power off, press any button to power on again. Power Supply: 2x1.5V AAA batteries (not included) Sampling Rate: 2 to 3 times per second Polarity Display: Negative polarity input display "-" Low Battery Display: Display symbols Data Retention: Display symbols "DH" Relative Value Measurement: Display symbols "REL" Working Environment: Temperature 0~40℃, relative humidity ≤85% Storage Environment: Temperature -10~50℃, relative humidity≤85% DC V Range Resolution Accuracy 600mV 0.1mV ±(0.5% of reading + 5 words) 6V 1mV ±(0.5% of reading + 2 words) 60V 10mV ±(0.5% of reading + 2 words) 600V 100mV ±(0.8% of reading + 2 words) Overload protection DC 600V or AC 600V true RMS Input impedance 10 mΩ, 600 mV gear > 100 mΩ AC V (True RMS) Range Resolution Accuracy 6V 1mV ±(1.0% of reading + 3 words) 60V 10mV ±(1.0% of reading + 3 words) 600V 100mV ±(1.5% of reading + 3 words) Input impedance 10 m Ω Overload protection DC 600V or AC 600V true RMS Frequency range 40 hz ~ 2 khz DC A Range Resolution Accuracy 60mA 10μA ±(1.2% of reading + 2 words) 600mA 100μA ±(1.2% of reading + 2 words) 6A 1mA ±(2.0% of reading + 3 words) 10A 10mA ±(2.0% of reading + 3 words) Overload protection F600mA/250V fast-acting fuse; F10A/250V fast-acting fuse Maximum input current 10A (no more than 10 seconds) AC A(True RMS) Range Resolution Accuracy 60mA 10μA ±(1.5% of reading + 3 words) 600mA 100μA ±(1.5% of reading + 3 words) 6A 1mA ±(2.5% of reading + 5 words) 10A 10mA ±(2.5% of reading + 5 words) Overload protection F600mA/250V fast-acting fuse; F10A/250V fast-acting fuse Maximum input current 10A (no more than 10 seconds) Frequency range 40 hz ~ 2 khz Resistance (Ω) Range Resolution Accuracy 600Ω 0.1Ω ±(1.0% of reading + 3 words) 6kΩ 1Ω ±(1.0% of reading + 2 words) 60kΩ 10Ω ±(1.0% of reading + 2 words) 600kΩ 100Ω ±(1.0% of reading + 2 words) 6MΩ 1KΩ ±(1.0% of reading + 2 words) 60MΩ 10KΩ ±(1.5% of reading + 3 words) Overload protection 250V DC or AC RMS Capacitance Range Resolution Accuracy 6nF 1pF ±(5.0% of reading + 10 words) 60nF 10pF ±(5.0% of reading + 10 words) 600nF 100pF ±(3.0% of reading + 10 words) 6μF 1nF ±(3.0% of reading + 10 words) 60μF 10nF ±(5.0% of reading + 10 words) 600μF 100nF ±(10.0% of reading + 20 words) 6mF 1μF ±(10.0% of reading + 20 words) 60mF 10μF ±(10.0% of reading + 20 words) Overload protection 250V DC or AC RMS Frequency(HZ) Range Resolution Accuracy 9.999Hz 0.001Hz ±(0.5% of reading + 5 words) 99.99Hz 0.01 Hz ±(0.5% of reading + 5 words) 999.9Hz 0.1 Hz ±(0.5% of reading + 5 words) 9.999kHz 1 Hz ±(0.5% of reading + 5 words) 99.99kHz 10 Hz ±(3.0% of reading + 5 words) 200kHz 100 Hz ±(3.0% of reading + 5 words) Test sensitivity 1.5V AC RMS Overload protection 250V DC or AC RMS Duty Cycle Measurement range 0.1% ~ 99.9% Accuracy ±(2.0% reading +2 words) Frequency below 10kHz and above 10kHz does not guarantee accuracy Sensitivity 0.6V AC RMS Overload protection 250V DC or AC RMS Temperature (℃/℉) Range Resolution Accuracy -20~150℃ 1℃ ± (3℃+1 word) 150~1000℃ 1℃ ± (3% reading +2 words) -4~302℉ 1℉ ± (5℉+2 words) 302~1832℉ 1℉ ± (3% reading +3 words) NiCr-NiSi K-type thermocouple Overload protection 250V DC or AC RMS Diode test Resolution 1mV Function Read the forward voltage across the diode at an instant Overload protection 250V DC or AC RMS Instant DC current about 1.5mA, reverse DC voltage: about 4V Continuity Continuity test When the component or circuit being measured resistance less than 50 Ω, buzzer sound Overload protection 250V DC or AC RMS Open-circuit voltage About 2V Non - contact AC voltage (NCV) test Detection voltage range 90V~1000V AC RMS When an AC voltage signal is sensed, the red buzzer will light up and the buzzer will sound.