1、This is a non-isolated DC regulated power converter module with long service life. 2、High power and stable output, it converts 5-30VDC to 1.25-30VDC. 3、High quality components ensures high conversion efficiency, up to 93%. 4、It supports over current, short circuit, over temperature protection. 5、Designed with two heat sinks for better heat dissipation. Features: This is a non-isolated DC regulated power converter module with long service life. High power and stable output, it converts 5-30VDC to 1.25-30VDC. High quality components ensures high conversion efficiency, up to 93%. It supports over current, short circuit, over temperature protection. Designed with two heat sinks for better heat dissipation. Specification: Type: Non-isolated synchronous rectification automatically step up/down module Input Current: 8A, (MAX) 10A, (within 6A for long-term work) Constant Current Output Range: 0.2-10A Operating Temperature: -40℃ to +85℃ Frequency: 150KHz Conversion Efficiency: Typical 91%, maximum 93% Over Current Protection: Yes Short Circuit Protection: Yes (current limiting protection) Reverse Input Protection: No, please connect to a diode in series at input if needed Output Flow Back Protection: Yes, do not need to add the diode when used for charging. Wiring Method: Terminal block output, (IN is input, OUT is output) Weight: 70g / 2.5oz (approx.) Package list: 1 * Module Current Adjustment: 2, Rotate counterclockwise CC potentiometer about 30 circles, (i.e. the output current is set to minimum), connected to the LED, set CC potentiometer to required current. If you use the module for battery charging, connect to output after battery is fully discharged. Adjust CC to required current. Because if the more energy is left in battery, the less charging current will be. Please do not use short circuit to adjust current.