This MESR-100 automatic capacitor ESR and low Ohm meter measures from 0.001 to 100.0R, supporting in-circuit testing. It uses a true 100 KHz sine wave to measure the ESR value, which is equivalent to the test method of capacitor manufacturers. Features: It is a series resistor inside the capacitor, which uses 100kHz to remove the impedance 1/(2*pi*F*C). The impedance becomes small, and we can then measure the true series resistance value. Using this theory, we can measure whether the capacitor is bad/damaged or in good condition. Our ESR meter applies only less than 15mV DC or peak to peak to a good capacitor, which allows us to use it as an in-circuit test. When repairing TV, LCD, audio board, etc., we can in-circuit test whether the capacitor is good or not. Dual terminals, for quick and easy inspection of the capacitor's internal resistance, a printed ESR table for quick checking. Equipped with an SMD alligator clip for more accurate testing. Copper plating on the surface, which is corrosion and oxidation resistant. Specifications: Color: Black Range Accuracy (After zero, Update time (Manual mode) tested with 1,10,100R Auto mode takes 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% (details in the table above) Wide measurement range: 1uF High resolution: 4 digits, or 0.001Ohm @ 1 range Measuring voltage: 80 hours Item size: Approx 14.5 * 8 * 3cm / 5.7 * 3.1 * 1.2in Item weight: Approx 139.6g / 4.9oz Package size: Approx 17 * 9 * 5cm / 6.7 * 3.5 * 2.0in Package weight: Approx 218g / 7.7oz Package list: 1 * Capacitance meter 2 * Test clips 1 * SMD clip 1 * User manual Note: The capacitance meter is used to test the internal resistance of the capacitor, not to test the capacitance value. Please pay attention to the size and dimensions of the product when shopping to ensure it meets your needs. In the title and description, we have provided detailed information about the product, including its features and specifications. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please do not hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!