The for -EW11A unit is a complete solution for serial port device connecting to network. This powerful device supports a reliable and proven stored in flash memory, an embedded web server, a full TCP/IP protocol stack,and standards-based () encryption.For -EW11A serial server for data transfer via Wi-Fi, which makes the data transformation very simple.Support 802.11bgn Wireless StandardSupport TCP/UDP/Telnet /Modbus TCP ProtocolSupport RS485 to Ethernet/Wi-Fi Conversion, Serial Speed 460800 Support STA/AP/AP+STA ModeSupport V8 Smart Config(Provide APP)Support Easy Configuration Through Web Interface or PC IOTService ToolSupport Security Protocol Such As //DES3Support Web OTA Wirelss UpgradeWide DC Input 5-36VDCColour:BlackMaterial:Plastic+MetalPackage Contents:1 * RS485 to WiFi Serial Device Server1 * 4 Pin terminal1 * fixed bracketOnly 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 measurement allowed error is +/- 1-3cm.