... paging microphone voip, hands-free converstation video intercom, broadcasting, monitoring, remote control IP video intercom paging microphone Enabled by TCP/IP technology ... and one-way (or two-way) video transmission. This system steams the audio and video signals over LAN or WAN by the ... /output, 2 short-circuit, SD card holder, RJ45, USBDimensions270x165x52mm IP video intercom paging microphone