... , Real-time transmission, H264 code compress hidden pinhole camera Mini 3G DVR 3G video & audio scene collection ,Real-time ... for audio and video integrated machine.Audio outputOne 2.5mm interface,one headphone output,support central intercom.Video disposalH264 coding ... ,support two-way intercom function.MemoryA micro SD POP socket interface,Maximum support 16G capacity,allowing users to remove the ...