Economic 4CH/8CH full function DVR, VGA Output, 1CH Audio input, E-mail function,Support 3G mobile phone surve,12 languages. Item EN-1604ZSChannel8-channel4-channelVideo signalPAL (625 lines, 50f/s); NTSC (525lines, 60f/s)Video inputBNC(1.0Vp-p/75)×8BNC(1.0Vp-p/75)×4Video outputComposite video:1.0V p-p/75,BNC connector×1,VGA×1Audio input1 x RACAudio output1 x RACAlarm input2-channel input. ...