1. Support negative - voltage display. 2. Single series range 0.1V-6V. 3. Measurement accuracy 0.05%3MV. 4. Support for mixed insertion (without starting with B-). 5. Automatically identify the number of battery series. Display the highest voltage, the lowest voltage, and the maximum differential voltage between series . Type-C port power supply. Color LCD display with 1S to 24S battery pack measurement. Note:1.2.0MM and 2.5MM spacing interface can't be connected at the same time 2.Range between series:0.3V-9V Matters needing attention:Please follow the instructions to insert the meter, the connector and cable sequence can not be wrong. Direction for use:Connect the Type-C power port to the power supply, and then select the detection port according to its own interface, and then you can check whether the voltage difference is normal. Due to different factory batches, the product words are different, and the product accessories have slight differences in color and appearance, but it does not affect normal use Colour:Photo Color Material:Acrylic Package Contents: 1set x 1-24 battery pack voltage measuring instrument single 0.3V-9V Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.