Support TCP server, TCP client, UDP server, UDP client, HTTPD client and modbus TCP work mode ^^ Serial port baud rate can be set from 600bps to 460.8K bps, parity: None, Odd, Even, Mark, Space ^^ Supports self-defined heartbeat package, keep the connection can never crash ^^ Configure the parameters via the webpage, AT command, serial protocol and net protocol, provides setting protocol, and users can put into their software. ^^ Supports TCP client short connection, the disconnection interval can be set.