1. This MESR - 100 automatic range capacitance equivalent series resistance (ESR) and low ohmmeter has a measurement range of 0.001 to 100.0 ohms and supports in - circuit testing. It uses a true 100kHz sine wave to measure the ESR value, which is the same as the testing method used by capacitor manufacturers. 2. Features: - It measures the series resistance inside the capacitor and uses a frequency of 100kHz to eliminate the impedance 1/(2πFC). - After the impedance decreases, the true series resistance value can be measured. - Using this principle, it can be determined whether the capacitor is damaged or normal. - The DC voltage or peak - to - peak value applied by our ESR meter to a normal capacitor is less than 15mV, so it can be used for in - circuit testing. - When repairing TVs, LCD monitors, audio boards, etc., it can be used to test whether the capacitor in the circuit is normal. - It has a two - terminal design, which can quickly and easily detect the internal resistance of the capacitor, and is equipped with a printed ESR table for quick reference. - It is equipped with SMD alligator clips for more precise testing. The surface is copper - plated, with anti - corrosion and anti - oxidation properties. 3. Specifications: - Color: Black - Range accuracy (refresh time in manual mode after zeroing): Tested with 1, 10, and 100 - ohm resistors. The automatic mode takes 0 to 2 seconds, depending on the capacitance value. - 0.000 to 1.000 ohms: Accuracy is ±(1% + 2 digits), refresh time is 0.4 seconds. - 1.000 to 10.00 ohms: Accuracy is ±(1% + 1 digit), refresh time is 0.4 seconds. - 10.00 to 100.0 ohms: Accuracy is ±(2% + 1 digit), refresh time is 0.4 seconds. - Accuracy: Up to 1% (see the table above for details). - Wide measurement range: 1 microfarad. - High resolution: 4 - digit display, 0.001 ohm at 1 range. - Measurement voltage: Battery life is 80 hours. - Product dimensions: Approximately 14.5 * 8 * 3 cm / 5.7 * 3.1 * 1.2 inches. - Product weight: Approximately 139.6 grams / 4.9 ounces. - Packaging dimensions: Approximately 17 * 9 * 5 cm / 6.7 * 3.5 * 2.0 inches. - Packaging weight: Approximately 218 grams / 7.7 ounces. 4. Package contents: - 1 capacitance meter - 2 test clips - 1 SMD clip - 1 user manual 5. Notes: - This capacitance meter is used to test the internal resistance of capacitors, not to measure the capacitance value. - When shopping, please pay attention to the product size and specifications to ensure they meet your needs. In the title and description, we have provided detailed information about the product, including its features and specifications. 6. After - sales service: - We hope you are completely satisfied with the product you purchased. If you have any questions or concerns, please feel free to contact us. We will do our best to assist you. 7. Conclusion: - Thank you for choosing our product. We hope you like it.