The RFCOM-108 IoT Communication Management Unit is a multi-interface, high-performance RS485 communication management terminal designed for industrial control environments. The device integrates an ARM A7 processor with a main frequency of up to 798 MHz and adopts a fanless silent design, making it adaptable to complex industrial environment applications. It supports interfaces such as RS485 and Ethernet, enables WEB remote configuration and control, and is compatible with software features of Modbus RTU and Modbus TCP.