Color:USR-W610 Features Support WIFI@2.4GHz 802.11b/g/n wireless standards. Support TCP Server/TCP Client/UDP Server/UDP Client/HTTP Client mode. Support AP, STA, AP+STA. Support RS232 and RS485 serial ports. Support electrostatic protection. Support identity packet function. Support heartbeat packet function. Support Websocket function. Support timeout reset function, timing reset function. Support Web Server, setup software, serial/network AT command to configure module. Support hardware reload. Support usrlink. Work Mode Transparent Transmission Mode In this mode, all transmitted/received data is not parsed between the serial port and the WiFi interface. It minimizes the complexity of user usage. HTTP Client Mode In this mode, serial data will be submitted to the HTTP server via HTTP GET/POST/PUT requesting method. AT Command Mode In this mode, user can query/set parameters via serial AT commands or network AT commands. Special Features Modbus Polling Mode In this mode, it supports Modbus TCP and Modbus RTU mutual conversion. Heartbeat Packet Function USR-W610 supports network heartbeat packet and serial heartbeat packet. The network heartbeat packet notifies the server that it is in an active state, and it maintains the normal connection with the server by continuously sending the heartbeat packet. Socket Distribution Protocol USR-W610 suppports SDP, you can add certain header in serial data. It will send the data to differetnt socket by different header. The data received from different socket will be added different header before they are sent to serial. Regular Restart Function USR-W610 supports timing and timeout restart function, which makes the system run more stable.