["Descriptions:\r\nThe module uses the step-up and down the chip as the main controller, external 60V 75A MOS \r\n\r\ntube as a switch, double 60V 5A SS56 Schottky do rectifier.\r\nCan be boosted, the output voltage 0.5-30V arbitrary adjustment, limiting current 0\r\n\r\n-4A arbitrary adjustment; can be used for LED constant current drive, battery charging and other \r\n\r\nconstant current occasions, while limiting current with overcurrent for protection, more secure ; \r\n\r\nConstant current mode indicator, charging indicator, full of light. Output anti-backwash, do not \r\n\r\ncharge the battery when the additional anti-flooding diode.\r\nWide voltage input 5.5-30V, wide voltage output 0.5-30V, such as you \r\n\r\nadjust the output voltage of 18V, then the input voltage between 5.5-30V casually change, will be \r\n\r\nconstant output 18V; then for example, you enter 12V, adjust the potentiometer settings 0.5-30V \r\n\r\narbitrary output.\r\n\r\nSpecifications:\r\nInput Voltage: 5-30V\r\nOutput Voltage: 0.5-30V\r\nOutput Current: to long-term stability in the 3A, to strengthen the heat can reach 4A\r\nOutput Power: Natural Cooling 35W, Strengthen the Heat 60W\r\nConversion efficiency: 88%\r\nShort circuit protection: Yes\r\nOperating frequency: 180KHZ\r\nSize: 65x32x21mm/2.56x1.26x0.83\"(LxWxH)\r\nQuantity: 1 Pc\r\n\r\nNote: \r\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you \r\n\r\nbid.\r\nDue to the difference between different monitors, the picture may not reflect the actual color of \r\n\r\nthe item. Thank you!\r\n\r\nNo Retail Package\r\nPackage Contents:\r\n1 x Step Up/Down Module"]