This is an RS232/485 device data acquisitor/IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, serial port to HTTPD Client, etc. The module can realize functions such as serial port to WIFI, serial port to Ethernet, Ethernet to WIFI and so on. [Ethernet Port and WiFi To RS232/485] Ethernet Port and WiFi To RS232/485: The Ethernet port and WiFi can send data to the two serial ports at the same time. [RS232/485 To Ethernet Port and WiFi] Only one of the RS232 and RS485 can send data to the Ethernet port and WiFi at the same time. [Support multi wireless networking methods] Support AP mode, STA mode, and AP+STA mode. [Support multi wired networking methods] Support APLAN, APWAN, Router, and Bridge mode. [Power Supply Methods] Support Screw Terminal and DC 5.5 Power Port for Power Supply, DC 6-36V Wide Voltage Range Input. [Support transparent transmission mode] Support TCP Server, TCP Client, UDP Server, UDP Client Industrial grade metal case design, supports wall-mount and rail-mount installations, small in size, easy to install. [Applications] It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring,etc. Colour:Black Material:Aluminum alloy Package Contents: 1 * host 1 * antenna 1 * screwdriver 1 * rail buckle 4 * screws 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.