An RS232/485/422 device data collector / IoT gateway specifically designed for industrial environment applications. It is a serial server, Modbus gateway, MQTT gateway, RS485 to JSON and many other functions in one. RS232/485/422 and Ethernet interface with PoE function, with 5.5mm outer diameter and 21mm inner diameter power interface. The power interface of 5.5mm outer diameter and 21mm inner diameter is connected with terminal block type power supply, and the rail type housing design is compact and easy to install. It is suitable for data acquisition, IOT gateway, security IOT and smart meter monitoring. Software Protocols: ETHERNET, IP, TCP, UDP, HTTP, , ICMP, DHCP, DNS Configuration: host computer configuration, WEB browser, device management function library Communication mode: TCP/IP direct communication, virtual serial port mode Operating modes: TCP server, TCP client (TCP server also coexists), UDP, UDP multicast Other Operating temperature: -40 ~ 85 Humidity range: 5% ~ 95% relative humidity Material: ABS colour: black Package Contents: 1 x DIN-Rail Serial Server Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.