UNO-220 is designed for customers using Raspberry Pi (RPi) single-board computers (SBCs) in unique IoT applications. Featuring 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 time keeping; the UNO-220 industrial-grade chassis transforms RPi 4 into an intelligent gateway. UNO-220 features pre-finished mounting holes and attachment screws enabling plug-and-play assembly with separately purchased RPi 4 SBCs. This system provides developers with a complete RPi-ready industrial-grade gateway kit ideal for rapid prototyping and mass deployment.Includes: * 1x RS-232/485 * 4x GPIO * 1x 8GB SD card * Raspian OS https://elecena.pl/product/17138592/uno-220-raspberry-pi-4-gateway-kit 2020-08-25 https://elecena.pl/product/17138592/uno-220-raspberry-pi-4-gateway-kit 2021-02-03 https://elecena.pl/product/17138592/uno-220-raspberry-pi-4-gateway-kit 2021-06-07 https://elecena.pl/product/17138592/uno-220-raspberry-pi-4-gateway-kit 2021-12-31