Features: 10-60v wide input voltages, suitable for most power supplies on the market as input source. The output is constant voltages and constant current, and the voltages and current is continuously adjustable. Can meet most of the electrical equipment. Large output power, good ventilation, natural heat dissipation can achieve 280W/12A (note that there is output power and output current limits). The module adopts the step rectification scheme, which have extremely high efficiency, and the output voltages is above 10V and the efficiency is as high as 92%-96%. There is a constant current indicator when charging the battery. The input have 15A fuse, and the positive and negative poles of the input will not damage the power supply (the fuse will be burned, and the fuse needs to be replaced) Specifications: Component:Plastic Size:Approx.60x60mm/2.36x2.36inch Input Voltages:10.5-60v Output Voltages Ranges:0-45v (Must Meet the Steps-Down Condition, In Input Is Multiplied by 0.8) Output Constant Current: 0.2-15a (Continuously Adjustable, Heat Dissipation Should Be Strengthened if It Exceeds 12a) Most Output Power:400w Continuous Most Working Power: 280w (Under Ventilated Environment) Continuous Most Working Current: 12a (Under Ventilated Environment) Working Temperature: -10~+85 Degrees (Enhances Heat Dissipation When It Exceeds 65 Degrees) Working frequency: 100KHz Package Includes: 1pc 400W Highly-Power BuckConverter Module note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.