Step Down Converter DC-DC Constant Current Voltage Adjustable Power Supply Module Buck Converter

Working current: about 30mA Input reverse connection protection: Yes Short circuit protection: Yes Output anti-backflow: No (If charging the battery, first power on the module and then connect the battery, and ensure that the battery voltage is lower than the output voltage) Size: 70.5*48.4*28 mm Weight: 65g There are two buttons on the left side of the module: IN/OUT, ON/OFF: IN/OUT button switches input voltage and output voltage display, long press can switch output current output power display; ON/OFF button control output is ON or OFF, long Press to set the default output state of the next power-on to be ON or OFF. There are +, - two buttons on the right side of the module: + button presses the output voltage to increase 0.05V, long press can continuously increase, then long press can increase the continuous slow step by 0.1V, 1V; - press the button to reduce the output voltage by 0.05 V, long press can be continuously reduced, and then long press can reduce the continuous slow step by 0.1V, 1V. High efficiency over 93%, high current, low heat, constant current value 0-4.5A adjustment, suitable for office power supply, high power LED constant current drive, lithium battery battery charging!