This ethernet serial server has dual serial ports with 1-channel RS232 and 1-channel RS485, that is capable of operating simultaneously without interference, all through a single ethernet connection. It packs multiple functionalities in one device, serving as a serial server, Modbus gateway, MQTT gateway, and converter from RS232 and RS485 to JSON, making it a versatile choice for various projects. Powering the device is flexible, with two methods available: a DC port (outer diameter: 5.5mm, inner diameter: 2.1mm) and a screw terminal. The compact case includes rail-mount support for easy installation. This is ideal for projects such as data acquisition, IoT gateway functions, and safety & security IoT. We also have the PoE ethernet version in our store Note: The power supply is not included, it is recommended to use with a 12V Power Adapter Features * Industrial Isolation * Modbus Gateway * Dual Serial Ports * Multi Power Supply Methods * RJ45 Ethernet * MQTT & JSON * Ethernet Port Cascade * Rail-Mount What's on Board Specifications Product Type Serial server, Modbus Gateway, MQTT Gateway Basic Function Bi-directional transparent data transmission between RS232 and RS485 to Ethernet Communication Interface 1x RS232 port, 1x RS485 port, 2x Ethernet port Power Supply DC 5.5 power port, 6 ~ 45V DC screw terminal Isolation Protection Power isolation, Signal isolation Communication Ethernet RJ45 10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection Serial Port Isolated RS232 and RS485 (the 2 channels can receive and transmit independently at the same time) Serial Specifications Baudrate 300 ~ 115200 bps Parity Bit none, odd, even, mark, space Data Bit 5 ~ 9 bits Flow Control N/A Software Protocol Ethernet, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS Configuration host, web browser, device management functions library Communication Method TCP/IP direct communication, VCOM Operating Mode TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast Environment Requirements Operating Temperature -40℃ ~ 85℃ Humidity Range 5% ~ 95% relative humidity Dimensions L x W x H: 78.0 x 72.5 x 24.2 mm Resources * Product Wiki * User Manual Pinout Package Contents * 1x RS232/RS485 to RJ45 Ethernet Server https://elecena.pl/product/25789732/rs232-rs485-to-rj45-ethernet-serial-server 2024-05-03 https://elecena.pl/product/25789732/rs232-rs485-to-rj45-ethernet-serial-server 2024-09-18 https://elecena.pl/product/25789732/rs232-rs485-to-rj45-ethernet-serial-server 2024-11-29 https://elecena.pl/product/25789732/rs232-rs485-to-rj45-ethernet-serial-server 2024-11-30 https://elecena.pl/product/25789732/rs232-rs485-to-rj45-ethernet-serial-server 2025-02-13 https://elecena.pl/product/25789732/rs232-rs485-to-rj45-ethernet-serial-server 2025-08-06 https://elecena.pl/product/25789732/rs232-rs485-to-rj45-ethernet-serial-server 2025-11-28 https://elecena.pl/product/25789732/rs232-rs485-to-rj45-ethernet-serial-server 2025-11-29