The EW11A unit is a complete solution for connecting serial port devices to a network. This powerful device supports reliable and proven firmware stored in flash memory, an embedded web server, a full IP protocol stack, and standards-based encryption. The EW11 serial server enables data transfer via Wi-Fi, simplifying data transmission. Supports 802.11b/g/n wireless standard Supports UDP, Telnet, and Modbus protocols Supports RS485 to Ethernet/Wi-Fi conversion with serial speeds up to 460800 bps Supports STA, AP, and AP+STA modes Supports V8 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: 5–18VDC Color: As shown Material: Plastic Size: 61 x 26 x 17.8mm (L x W x H) Package Contents: 1 x Wireless module kit (only the above items included; other products not included) Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowed within +/- 1–3 cm.