... , hands-free converstation video intercom, broadcasting, monitoring, remote control IP video intercom paging microphone Enabled by TCP/IP technology, Huanyutong IP Network Intercom /broadcasting ... steams the audio and video signals over LAN or WAN by the form of IP packet.,completely solves the ... , 2 short-circuit, SD card holder, RJ45, USBDimensions270x165x52mm IP video intercom paging microphone