TCP/IP Network Relay 4 Channel 10a Android Phones Remote Relay Control 4 channel relay, package with centralized control software, Android software, Network Interface 10M/100M Ethernet interface; The device Need Fixed IP addres,when use for Internet. Jog Mode: 3-200s delay; NO\NC Mode Distributed nodes, centralized management. Support Android phones. Software support to add unlimited number of nodes, easy to centralized control