This MESR-100 V2 auto-ranging capacitor ESR and low Ohm meter measuring range from 0.001 to 100.0R, support in circuit testing. Using true 100 KHz sine wave to measure the ESR value, which is to the testing of capacitor manufacturer. Features: It is a series resistor inside capacitor, using 100kHz to remove the impedance 1/(2 x x F x C). The impedance become small, and then measure the true series resistor value. Using this , measure the capacitor is bad/ damaged or good in condition. ESR meter only applies less than 15mV DC or to on a good capacitor, as a use it as in circuit test. During repairing TV, LCD, Audio board, etc. in circuit testing the capacitor is good or not. material: plastic Color as shown Dual terminal, for fast and easy inspect general capacitor or resistor, a printed ESR table for fast check. Specifications: Range Accuracy(After , Refresh Time(Manual Mode) tested with 1,10,100R Auto mode take 0 to 2s, more time resistor) depends on capacitance value. 0.000 to 1.000R 1%+2Digit ~0.4s 1.000 to 10.00R 1%+1Digit ~0.4s 10.00 to 100.0R 2%+1Digit ~0.4s Accuracy: Up to 1% ( on above table) Wide Measurement Range: 1uF High Resolution: 4 digit, or 0.001Ohm @ 1 range Measuring voltage: Less than ~40mV (TESTING VOLTAGE) External Power: 5V -USB Operating Current: 0.02A Battery: 2 x AA 1.5V Battery (not included) Battery Life time: 80 Hours Item Size: 14.5 x 8 x 3cm / 5.7 x 3.1 x 1.2in Item Weight: 139.6g / 4.9oz Package Contents: 1 x Capacitance Meter 2 x Test Clips Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.