The Elfin-EW11A unit is a complete solution for connecting serial port devices to a network. This device supports a reliable operating system stored in flash memory, an embedded web server, a full TCP/IP protocol stack, and standards-based AES encryption. The Elfin-EW11 serial server enables data transfer via Wi-Fi, simplifying data communication. Supports 802.11b/g/n wireless standard Supports TCP, UDP, Telnet, and Modbus TCP protocols Enables RS485 to Ethernet and 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 including TLS, AES, and 3DES Supports web-based OTA wireless upgrade Equipped with internal PCB antenna Wide DC input range: 5–18V DC Color: As shown Material: Plastic Size: 61 x 26 x 17.8 mm (L x W x H) Package Contents: 1 x Wireless module kit Note: Other products are not included. Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1–3 cm.