On-board MCU (RP2040) with strong performance and easy to started. On-board clock chip (PCF85063), which can accurate time control.On-board boost DC-DC chip (MP28167-A), which provides fast load transient response. On-board lithium battery interface provides power supply anti-reverse connection and anti-backflow mechanism to fully circuit safety.On-board RP2040 pin interface, compatible with Pico standard interface, can be equipped with PICO expansion board.On-board custom keys, which can be used as power button to power on, software shutdown and forced shutdown of .Input power supply voltage detection, operating current detection, programmable off to the working life of the lithium battery.Material: PCBcolour: as shownPackage Contents:1 control board kitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.