The NuMaker-M252KG development board, based on the M252KG6AE MCU, provides Arduino UNO-compatible headers, full pin extensions, flexible power options, and an ammeter connector for power monitoring. It includes a detachable Nu-Link2-Me debugger/programmer with SWD, online/offline ICP, VCOM, and 16 Mbit SPI Flash, making it a versatile platform for prototyping and production use.