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. : PCB colour: as shown Package Contents: 1 control board kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.