Measure only the internal resistance of the capacitor This capacitor ESR MESR-100 V2 and measuring range of low ohmmeter from 0,001 to 100,0R, support in circuit testing. The use of an actual 100 kHz sine wave to measure the value of ESR, which is equal to the capacitor manufacturer’s testing method. Functions: It is a serial resistor inside the capacitor, using 100kHz to remove 1/2*pi*F*C impedance. The impedance becomes small, and then we can measure the value of the real series resistor. Using this theory, we can measure the capacitor as bad/damaged or in good condition. Our ESR meter only applies less than 15mV DC or peak to peak on a good capacitor, so we can use it as a circuit test. When repairing TV, LCD, audio board itp. In circuit testing, the capacitor is good or not. Dual terminal for quick and easy checking of general capacitor or resistor, printed table ESR for quick checking. Technical data: Black color Range accuracy (after zero, refresh time (manual mode) tested in 1,10,100R mode Automatic mode lasts from 0 to 2 seconds, more time resistor) depends on the capacity value. 0,000 do 1,000R 1% 2Dig 0,4s 1.000 to 10.00R 1% 1 digit 0,4 s 10,00 to 100,0R 2% 1 digit 0,4 Accuracy: up to 1% (details in the table above) Wide measuring range: > 1 uF High resolution: 4 digits or 0,001Ohm @ 1 Ω Measuring voltage: < 40mV RMS (TEST VOLTAGE) External Power: 5 V micro USB Operating Current: 0,02A Battery life: >80 hours Item Size: About 14,5*8*3cm/5,7*3,1*1,2inch Product weight: about 139,6 g / 4,9 oz Package weight: about 218g/7,7oz List of packages: 1 * Capacity Meter 2 * Test Clips 1 * User Manual