Note: 1. Lead wire length within one meter conductors of not less than 1.5 square feet if the length is greater than 1mplease thickening lead recommended 2.5 to 4 square feet of wire is better; 2. When module operating in high-power high temperature adding plus shellplease install the fan low power without adding a fan be sure that the low temperature; 3. No short-circuit protection be sure not to reverse do not short-circuit; Applications: 1. DIY an output adjustable vehicle power supply only need access to your 12V power input the output voltage you need to choose your voltage the output voltage can not be lower than the input voltage. 2. Power for your electronic devices as long as the voltage and current of the voltage regulator you need not exceed the rated current can all be working properly. 3. Solar cells for electric vehicle battery charging.