The Elfin-EW11A unit is a complete solution for connecting serial port devices to a 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 standards-based AES encryption. The Elfin-EW11A serial server enables data transfer via Wi-Fi, making data transformation simple. Supports 802.11b/g/n wireless standard Supports TCP, UDP, Telnet, and Modbus TCP protocols Supports RS485 to Ethernet/Wi-Fi conversion Serial speed up to 460800 bps Supports STA, AP, and AP+STA modes Supports Smartlink V8 smart configuration (APP provided) Easy configuration through web interface or PC IOTService tool Supports security protocols such as TLS, AES, and 3DES Supports web-based OTA wireless upgrade Wide DC input range: 5–36V DC Color: Black Material: Plastic + Metal Package Contents: 1 x RS485 to WiFi serial device server 1 x 4-pin terminal 1 x fixed bracket Note: Light reflection and different displays may cause slight color variations between the item in the picture and the actual product. Measurement error allowance is +/- 1–3 cm.