The S100 Slave – RS-485 Module is a certified rhomb.io Module with two RS-485 transceiver IC that convert UART serial stream to RS-485, a serial communications standard widely used in industry for its simplicity and robustness. Due to the module has two transceivers, you can use two RS-485 buses independently or convert the system in full-duplex, it will depend on the configuration of the assembled resistors.

Documentation and Schematics