DUOYI DY223 Electrical Vehicle Voltage Testing And Fault Diagnostic Instrument 1. Resistance, voltage sorting comparison function, can be customized to set the primary and secondary resistance thresholds and primary voltage thresholds 2. Measure and display the internal resistance and voltage of the test battery at the same time; backlight display is convenient for working in dimly lit places and at night 3. Auto power off to save power If there is no key operation in the measurement or comparison mode, the instrument will be automatically shut down after 10 minutes 4. Soft rubber buttons are comfortable to use and not easy to wear 5. Built-in ambient temperature measurement for versatile use 6. Suitable for all kinds of battery measurement: such as new energy vehicles, traditional cars, electrical cars, motorcycles, etc Parameters: 1. Measurement object: internal resistance measurement battery voltage measurement ambient temperature measurement 2. Resistance measurement range 0.000mΩ2-200Ω (5 ranges, automatic unit switching) 3. Voltage measurement range: 0.000V-+-100V 4. Temperature measurement range: -10-50 degrees celsius 5. Measuring speed: 3 timessecond 6. Battery: 6 x LR6 (not included in shipment) 7. Dimensions: 170 x 100 x 38mm 8. Weight: 200g