Features 1、Assembled with special voltage control IC and special automobile relay 2、Small volume and large current 3、Voltage shutoff accurate and stable 4、Complete functions and reliable performance 5、Automatically charge and shut off Specification Description: Features: 2, Small volume and large current. 4, Complete functions and reliable performance. 5, Automatically charge and shut off. Specifications: Size of PCB: 50 x 32 x 18 mm Default Value: Wiring Method: Please wire according to instruction. Do not change wiring. Instruction: Connect any wire of 220 V with the COM port of relay, and connect charger with OFF port. The charger must be full bridge rectified output. Function 1: Current cannot be larger than 10 A. Function 2: The board has reverse connect protection function. There is no output if no battery is connected. No output if the polarity of battery is wrong. Output short circuit automatically shut down: It is a practical protection. As long as the output short circuit, the charger will automatically shut down output, so protect the charger from burning. Adjustment: VR2 relay connected and began to charge when battery voltage is 10.5 V(low voltage setting: clockwise lower, counterclockwise higher) Package includes: 1 x Charging Control Board Note: 1, Users need electric knowledge to use this item, please make sure you know how to use it before you buy. Thanks for your understanding. 2, Please allow 1-3 mm error due to manual measurement. Thanks for your understanding. 3, Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List