DinBase is a “5X5cm” series base specially designed for “DinRail” rail fixing. It is suitable for M5Core, and built-in 500mAh lithium battery, can be externally input DC power supply (support 9~24V); On-board power physical switch to completely shut down external power and battery. Reserved Port B and Port C interfaces. Lego mounting holes on the lower side for easy fixing, and the bottom supports standard 35mmDinrails; In addition, 4 plug-in ears are provided to support a variety of fixing methods. DinBase has a number of proto pads reserved on the internal PCB for easy DIY.