Usage Tips:Data Reference:input voltage range is DC 5-30V; output voltage range is DC 0.5-30V, can be arbitrary adjustable; output current can be 3A for long term use, if enhance heat dissipation, it can reach 4A; max output power is 35W, if enhance dissipation, it can reach 50W Safe Protection: the module is with Anti-reverse connection protection of input end, so that it will not burn out when there is reverse connection.Anti-backflow protection at the output end. No need to add anti-backflow diode when charging. Multiple software protection mechanisms are available, and the protection is adjustable. When the working parameters of the module the protection , the output will be automatically turned off Good Thermal PerformanceE:Output ripple is small and filter is available.Thick heat sink .-boost Integrated LCD Displays: input/output voltage, output current/output power/output capacity/output time.The module can be set to ON/OFF by default. Wide Range of Applications: the volt conversion board can be used as an ordinary /Boost module with over-current protection; used as a high-power LED constant current driver module; DIY a solar power controller, Battery Charging. Material: Metal+ABS colour: Black Package Contents: 1 x voltage regulator 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.