DC-DC Buck Converter Step down Constant Voltage Current Programmable Power Supply Module Description: The module can storage 10 groups of preset value and it can quickly extract 2 groups of preset value. With advanced functions, high accuracy, wide application, the item is really practical. Features: 1. Open or close the output: You can press the ON/OFF button to open or close the output on any interface. 2. Lock the button to avoid wrong operation: On any interface, you can keep pressing coding potentiometer for 2 seconds, all buttons are locked. Keep pressing coding potentiometer for 2 seconds to unlock all buttons. You can see the key lock/unlock icon on the right of the screen. 3. M0-M9 ten data groups: M0 group is the boot default data group. When you extract the data group you need, this data group will cover M0 data group and be automatically stored on M0 data group. 4. You can fast extract shortcut storage data group M1 or M2 and extract the specified data group. 5. Safety Protection: Input Polarity Protection, Output Short-circuit Protection. Specifications: Material: ABS Size: Approx. 79 * 43 * 46 mm / 3.1 * 1.7 * 1.8 inch Output Current: 0-5A Output Current Resolution: 0.001A Package Weight: About 116g Package List: 1 * Programmable Power Supply 1 * User Manual