The -EW11A device is a complete solution for connecting serial port devices to networks. This powerful device supports a proven operating system stored in flash memory, a built-in web server, a full /IP protocol stack, and standards-based () encryption. -EW11 serial server for data transmission over Wi-Fi, making data conversion very easy. Supports 802.11bgn Wireless standard support /UDP/Telnet /Modbus protocol support RS485 to Ethernet/Wi-Fi conversion, serial speed 460800 Supports STA/AP/AP+STA mode Supports V8 Smart Config( APP) Supports easy configuration via web interface or PC IOTService tool Supports security protocol such as //DES3 Supports wireless upgrade by Web OTA Supports internal PCB antenna Wide DC input 5-18VDC Color:As shown Material:Plastic Size:61x26x17.8mm(L x W x H) Package Contents: 1 * Wireless Module Kit The above package content only, 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 color. The measurement allowed error is +/- 1-3 cm.