4/8/16 channel network DVR support mobile review Support IE and client, remote parameter settings, preview, download video ... ,75Ω and 1 VGA outputAudio Input1 channel ,RCA 200-2800mV,30KΩAudio Output1 channel ,RCA, 200-3000mV,5KΩAlarm Input1 channelAlarm output1 ... .5 kg 4/8/16 channel network DVR support mobile review