Function Description: 1. Calculation of voltage percentage: battery voltage / (upper limit voltage - lower limit voltage) 2. Button function: UP button: short press to switch display % and time, long press for 5 seconds to switch mode Type: Voltage Regulator Model Number: XY-CD63L Operating Temperature: 30A battery battery charging control module Supply Voltage: 6-60V Dissipation Power: 30A Application: Computer Note: This product is a simple voltage controller. It can turn on and off the output by relay. It only plays the role of switching, and can not change the voltage. Parameter setting: a. Press and hold the SET button to enter the parameter setting interface; b. After entering the parameter setting interface, short press the SET key to switch the set parameters; c. After selecting the parameter, you can set it through the UP/DOWN key, support short press, Press; d. To set other parameters, repeat steps b) and c); e. After all parameter settings are completed, long press the SET button to exit and save; Material: plastic colour: blue Package Contents: 1 x Battery Charger Control Module 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.