The XY-SK35H is a DC-DC buck-boost power supply module that turns a 5-30V input into a stable, adjustable 0.6-30V output at up to 4A and 35W. Because it can step voltage both up and down, the output stays steady even when the input rises above or falls below your set voltage, which suits solar panels, batteries, and variable DC sources.

It works as a constant voltage and constant current (CV/CC) supply, with a large LCD that shows voltage, current, power, and CV/CC status at a glance. Voltage resolution is 0.01V and current resolution is 0.001A, and a rotary knob and keys make setting values quick. Protections include reverse connection, input under-voltage, over-voltage, over-current, over-power, and over-temperature.

Use it as a compact bench supply, a battery or solar charger, an LED constant current driver, or a small power source for DIY and CNC projects. It is a non-isolated module rated for 35W with natural cooling, and up to 50W with added airflow.