Item Type: Ethernet Controller Board Material: PCB Voltage: DC12V Default IP: 192.168.1.4, Port: 30000(you can change the default IP address) Uses: Industrial equipment and appliances 1、COMPATIBLE WITH RELAYS: This is an Ethernet controller board that is compatible with 16 channel relays. You can use the Ethernet controller board to control your devices remotely 2、NETWORK CONTROL VIA RJ45 INTERFACE: The module is equipped with RJ45 interface for network control via RJ45 telecommunication connection. Possess high stability and accuracy, easy to install and operate 3、CONTROL 16 DEVICES REMOTELY: Using the controller module and 16 channel relays, you can remotely control up to 16 devices over a LAN or WAN 4、CONTROL HOME DEVICES: The Ethernet controller board integrates web server, when you're in the office, just open the page on your computer, tablet or smartphone and control your home's lights, air conditioner or refrigerator, etc. 5、TCP CONNECT CONTROL: The only dual TCP connection control, corresponding to the above trait, acts locally as a TCP server, and accepts client control when connecting to a remote server as a TCP client 1 x Ethernet Control Module 1 x 16 Channel Relay Module