The -EW11A unit is a complete solution for serial port device connecting to network. This powerful device supports a reliable and proven stored in flash memory, an embedded web server, a full TCPIP protocol stack,and standards-based () encryption. -EW11 serial server for data transfer via Wi-Fi, which makes the data transformation very simple. Support 802.11bgn Wireless Standard Support TCPUDPTelnet Modbus TCP Protocol Support RS485 to EthernetWi-Fi Conversion, Serial Speed 460800 Support STAAPAP+STA Mode Support Smart Config(Provide APP) Support Easy Configuration Through Web Interface or PC IOTService Tool Support Security Protocol Such As DES3 Support Web OTA Wirelss Upgrade Support Internal PCB Antenna Wide DC Input 5-18VDC Colour:As Shown Material:plastic Size:61x26x17.8mm(L x W x H) Package Contents: 1 * wireless module Kit 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.