Four Serial Ports RS485 and RS232 Stackable HAT for Raspberry Pi

The latest Raspberry Pi models support up to four UART interfaces on the GPIO connector, but these signals require an external physical-layer transceiver for practical serial communication. The 4-Serial Ports HAT provides a robust and convenient way to connect Raspberry Pi systems to serial sensors, controllers, and industrial equipment. It features four independent serial ports, each selectable as RS-232 or RS-485, delivering maximum flexibility across diverse applications. FEATURES Version 2 of Four Serial Ports Card is now in stock with significant improvements. Each port can be individually selectable as RS485 or RS232. On board terminators available for RS485 selection. Four serial ports, each individually configurable as RS-232 or RS-485 Per-port mode selection via DIP switches Uses the serial ports available on the Raspberry Pi GPIO interface Serial Port #1 connected to Raspberry Pi UART1 (GPIO pins 8, 10) Serial Port #2 connected to Raspberry Pi UART2 (GPIO pins 21, 24) Serial