This is an LM2596 DC-DC buck converter step-down power module with high-precision potentiometer, capable of driving a load up to 3A with high efficiency, which can work with Arduinos and other mainboards and basic modules. When the output current is greater than 2.5A (or output power greater than 10W), please add a heat sink to it.
Dimensions:
21mm x 44mm x 14mm