The EW11A unit is a complete solution for connecting serial port devices to a network. This powerful device supports reliable and proven flash memory storage, an embedded web server, a full TCP/IP protocol stack, and standards-based encryption. - 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 Supports RS485 to Ethernet/Wi-Fi conversion with serial speed up to 460800 bps Supports STA, AP, and AP+STA modes Supports smart configuration (APP provided) Easy configuration through web interface or PC IOTService tool Supports security protocols such as DES3 Supports web-based OTA wireless upgrade Equipped with internal PCB antenna Wide DC input range: 5–18V DC Color: As shown Material: Plastic Dimensions: 61 x 26 x 17.8mm (L x W x H) Package includes: 1 x Wireless module kit Note: Light reflection and display differences may cause slight color variation between the image and actual item. Measurement tolerance: +/- 1–3 cm.