Advantech UNO-220 for Raspberry Pi 4 is designed for use with the Raspberry Pi single-board computers in unique IoT applications. The UNO-220 industrial-grade chassis transforms the Raspberry Pi 4 into an intelligent gateway. It features a system-image OS-equipped micro SD card, an RPi 4 HAT I/O board, additional RS-232/485 GPIOs, and an RTC battery backup for precise timekeeping. The Advantech UNO-220 includes pre-finished mounting holes and attachment screws for plug-and-play assembly. This system allows for rapid prototyping and mass deployment.