... 6mm 2.Embedded Linux OS 3.Support 32G TF Cards 4.Built in Microphon Mode:ZS-M52HWIACatalogue TypeParametersFeaturesView by phoneSupport ... Explorer 6.0 or higher version,firefox,chrome,safriSuper Client1,4,9,16,25,36, 64,81-channel , no user ... in MicrophoneOutputone channel linear output,normal connector of 3.5mmNetworkSocketRJ-45 10/100Mb self-adaptable Ethernet slotProtocolTCP/IP,HTTP,TCP,ICMP ...