HR8100 CCTV DVR , digital video recorder , 3G stand alone DVR support 3G mobile surveillance HR8100 CCTV DVR , digital video recorder , 3G stand alone DVRsupport 3G mobile ... formatH.264Video inputComposite1.0V p-p/75Ω, BNC×4/8/16Video outputComposite1.0V p-p/75Ω, BNC×1 ... @D1(NTSC)Audio input8k8bit, BNC X4Audio output8k8bit, BNC X1NO, 4/8/16CHAlarm output:NO or NC, 1CHRecord ModeManual / Sensor ...