1 The LCD can display input and output voltage, output current and output power. 2 The module has reverse input protection. (please try not to connect input reversely. There is + - marks on board that you can check before wiring) 3 It can step-up and step-down, output voltage is adjustable within 0.5-30V, limit current is adjustable within 0.2-4A. 4 Output has flow back protection, do not need to add flow back protecting diode when it is used to charge battery. 5 Use button to control output ON/OFF state, and can set default as ON or OFF when powered.
What's in the box
1 x Voltage Regulator Module
