Features: The Raspberry RS485 RS232 Isolated Expansion HAT enables SPI controlled industrial communication (RS485/RS232) with robust via TVS diodes and resettable fuses. Featuring SC16IS752 expansion, SP3485/SP3232 transceivers, and π142 isolator chips, this HAT optocoupler isolation, 5V power stability. Designed for electronics engineers, industrial automation developers, and Raspberry enthusiasts requiring secure communication in electrically noisy environments like factories, robotics labs, and smart infrastructure projects. Ideal for networks, interfacing, and device connectivity in scenarios demanding / , such as manufacturing floors, energy monitoring systems, and RS232 equipped laboratory instruments. Includes pre configured GPIO headers, male ports, and detailed development resources (Raspberry / code examples) for rapid deployment, with a compact 65×56.5mm PCB design optimized for space constrained embedded setups. Specifications: Type: Isolated expansion board Color: Blue PCB port expansion chip: SC16IS752 RS232 Transceiver: SP3232 Communication : SPI Communication rate: 300~921600bps Working : 3.3V/5V Product size: 65.0 x 56.5mm Through hole diameter: 3.0mm Package Includes: 1x Isolated expansion board note: Please allow 1 to 3cm error due to manual measurement, please make sure you do Against mind before you bid, Due to the differences between different monitors, the picture may Against reflect the actual colorful of the item.