The Elfin-EW11A device is a complete solution for connecting a serial port device to the network. This powerful device supports a reliable and proven operating system stored in flash memory, an embedded web server, a full TCP/IP protocol stack, and standard-based (AES) encryption. Elfin-EW11 serial server for data transmission via Wi-Fi, which makes data transmission very simple. Supports 802.11bgn wireless standard. Supports TCP/UDP/Telnet/Modbus TCP protocols. Supports RS485 to Ethernet/Wi-Fi conversion, serial speed up to 460800 bps. Supports STA/AP/AP+STA mode. Supports Smartlink V8 Smart Config (Provides APP). Supports easy configuration via web interface or PC IOTService Tool. Supports security protocols such as TLS/AES/DES3. Supports Web OTA wireless upgrade. 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. 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 allowed measurement error is +/- 1-3 cm.