Usr-tcp232-302 Rs232 To Tcp Ip Converter, Serial Ethernet Support. Features: Support DHCP, Automatically Obtain an IP Address and Query IP Address Through Serial Setting Protocol Support DNS Function Set Parameters Through Webpage Upgrade Firmware Via Network Auto-MDI/MDIX, RJ45 Port with 10/100Mbps Serial Port Baud Rate from 600 Bps to 230.4 Kbps, Check Bit of None, Odd, Even, Mark and Space Work Mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client Support Virtual Serial Port and Provide Corresponding Software USR-VCOM Heartbeat Package Mechanism to Ensure Connection is Reliable, Put an End to Dead Link User-defined Registration Package Mechanism, Check Connection Status and Use As Custom Packet Header Under TCP Server Mode, Client Number Ranges from 1 to 16; Default Number is 4 The Global Unique MAC Address Bought from IEEE, User Can Define MAC Address Restore Factory Default Across the Gateway, Switches, Routers Can Work in LAN, Also Can Work in the Internet (external Network) Provide PC TCP/IP Socket Programming Example Such As VB,C++,Delphi, Android and IOS Specifications Model Number: USR-TCP232-302 Port Number: 1 Interface Standard: RJ45 Rate: 10/100 Mbps, MDI/MDIX Auto Switch Between Cross and Direct Connection Protections: 2KV Buffer: Send: 6K Bytes, Recive: 4k Bytes  Size: 71x60x25mm Operating Temp: -25~75c Storage Temp: -40~105c 5~95%Rh Input Voltage: DC 4.75~7V Working Current: 150ma@ 5V Power: <1W . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.