This serial server combines functions like a serial server, Modbus gateway, and MQTT gateway, and also enables serial port data to be converted to HTTPD Client. With interfaces for RS232, RS485, WiFi, and Ethernet, it supports various data transfer methods, including from serial port to WiFi and Ethernet to WiFi. It includes multiple power supply interfaces, accepting a wide range of 6~36V, and has an optional PoE function. Its metal case allows for both wall-mount and rail-mount installations and its compact size makes it easy to install. It is ideal for data acquisition and serving as an IoT gateway in safety and security projects. We also stock a PoE version here Note: The power supply is NOT included, it is recommended to use this 12V Power Adapter Features * RS232/485 to Network * Multi Transparent Transmission Modes * HTTPD/MQTT * Modbus Gateway * RJ45 Ethernet Port * Host/Webpage/Serial Configuration * Wall-Mount and Rail-Mount Support Specifications Power supply DC 6~36V Power supply method DC 5.5 power port, screw terminal Dimensions (L x W x H) 84.00 x 64.00 x 24.00mm Communication Ethernet 10 / 100M auto-negotiation RJ45 connector WIFI 802.11b/g/n compliant Serial port RS232 (ESD/EFT) RS485 (ESD/EFT/surge protection) Wireless Specifications Frequency Band 2.412 ~ 2.484 GHz Wireless network Station / AP / AP+Station Mode Security mechanism WPA-PSK / WPA2-PSK Encryption type TKIP / AES Transmitting power 802.11b: +19dBm (Max.@11Mbps) 802.11g: +18dBm (Max.@54Mbps) 802.11n: +17dBm (Max.@HT20, MCS7); +17dBm (Max.@HT40, MCS7) Receiving sensitivity 802.11b: -89dBm (@11Mbps) 802.11g: -81dBm (@54Mbps) 802.11n: -73dBm (@HT20, MCS7); -71dBm (@HT40, MCS7) Serial Specifications Baudrate 300 ~ 460800 bps Parity bit None, odd, even, mark, space Data bit 5 ~ 9 bits Flow control RTS/CTS Software Protocol TCP / UDP / ARP / ICMP / DHCP / DNS / HTTP / MQTT Configuration Host, web browser, serial AT command Communication method TCP/IP direct communication, VCOM Operating mode Transparent transmission, serial command, HTTPD Client, Modbus TCP to Modbus RTU Environment Requirements Operating temperature -40℃ ~ 85℃ Humidity range 5% ~ 95% relative humidity Resources * Product Wiki * User Manual Pinout Package Contents * 1x RS232/485 Serial Server * 1x 2.4G WiFi antenna * 1x Rail-mount buckle * 1x Screwdriver * 1x Screws pack https://elecena.pl/product/25752654/rs232-485-to-wifi-ethernet-module-modbus-mqtt-gateway 2024-04-25 https://elecena.pl/product/25752654/rs232-485-to-wifi-ethernet-module-modbus-mqtt-gateway 2024-09-18 https://elecena.pl/product/25752654/rs232-485-to-wifi-ethernet-module-modbus-mqtt-gateway 2024-11-29 https://elecena.pl/product/25752654/rs232-485-to-wifi-ethernet-module-modbus-mqtt-gateway 2024-11-30 https://elecena.pl/product/25752654/rs232-485-to-wifi-ethernet-module-modbus-mqtt-gateway 2025-02-13 https://elecena.pl/product/25752654/rs232-485-to-wifi-ethernet-module-modbus-mqtt-gateway 2025-08-06 https://elecena.pl/product/25752654/rs232-485-to-wifi-ethernet-module-modbus-mqtt-gateway 2025-11-28 https://elecena.pl/product/25752654/rs232-485-to-wifi-ethernet-module-modbus-mqtt-gateway 2025-11-29