It can be used to measure AC/DC voltage, AC/DC current, resistance, capacitance, diode, continuity testing, frequency, etc. This battery powered product uses double-integral style A/D transform as its core, and is characterized by stable function and high reliability. With the Features of overload protection and backlight lighted LCD display for clear reading, this product is a perfect tool for lab, factory, radio fans, and family use. Features: LCD display with backlight. Max. display: 6000 Counts. Automatic polarity identification. Measurement mode: Double-integral style A/D transform. Measure AC/DC voltage, AC/DC current, resistance, capacitance, diode, continuity testing, frequency, etc. RM102 is specially designed with temperature measurement function. Over range indication: OL. Low voltage indication. Auto power off. Sample rate: 3 times per second. Specifications: Model: RM101, RM102 (optional) Maximum display: 6000 Working environment: 0-40 Relative humidity: 80% Supply power: 3V (1.5V battery * 2) (Not included) DC voltage: 600mV/6V/60V/600V/1000V DC voltage resolution: 0.1mV/1mV/10mV/100mV/1V AC voltage: 6V/60V/600V/700V AC voltage resolution: 1mV/10mV/100mV/1V DC current: 600A/6000A/60mA/600mA/10A DC current resolution: 0.1A/1A/10A/100A/10mA AC current: 600A/6000A/60mA/600mA/10A AC current resolution: 0.1A/1A/10A/100A/10mA Resistance: 600/6k/60k/600k/6M/60M Resistance resolution: 0.1/1/10/100/1k/10k Capacitance: 10nF/100nF/1F/10F/100F/1000F/10000F Capacitance resolution: 10pF/100pF/1nF/10nF/100nF/1F/10F Temperature: -20~1000C / -4~1832F(only for RM102) Temperature resolution: 1C/1F Item size: Approx. 13 * 6.5 * 3.2cm / 5.1 * 2.56 * 1.26in Item weight: 113g / 3.98oz Package size: 15.5 * 10 * 5cm / 6.1 * 3.94 * 1.97in Package weight: 182g / 6.42oz (RM101), 240g / 8.46oz (RM102) Package List: 1 * Multimeter 1 * Pair of test leads 1 * Thermocouple (Only for RM102) 1 * English user manual Note:When switched to mV, it is normal if there is slight value change even without operation, and the testing result won't be influenced at all.