4 channel standalone dvr

Video Compression FormatH.264Video SystemNTSC / PALGUI OSDYESVideo Input (BNC)4CH BNC input (composite video signal 1Vp-p 75Ω BNC)Video Output (BNC)1CH BNC outputAudio Input/Output1CH audio input,1CH audio output (RCA)Maximum Recording Rate (CIF)CIF:352×240 pixels with 120 FPS <NTSC> or 352×288 pixels with 100 FPS <PAL>HD1:704×240 pixels with 104 FPS <NTSC> or 704×288 pixels with 88 FPS<PAL>D1:704×480 pixels with 52 FPS <NTSC> or 704×576 pixels with 44 FPS <PAL>Image Quality SettingSupper Best, Well, Good, Medium, Normal and PoorHard Disk StorageSupport one SATA HDD, unlimited for the capacityAlarm Input/OutputNoMultiplex OperationLive display/record/playback/backup/network transmitRecording ModeManual/Timer/MotionPlayback ModeMultiple slow and rapid play speeds, manual and single-frame play modes, and support of drag the sliding bar to set.Backup DeviceUSB flash disk / NetworkPre-alarm RecordingRecording for 10 seconds before alarmingNetwork ProtocolTCP/IP,PPPOE ,DDNS and NTPEthernet remote viewSupport remote surveillance up to 10 users simultaneouslySNS softwareYESMobile phone ViewYESLog record functionYESImage TourYESIR Remote controlYESVideo Loss DetectionYESVideo AdjustableHue /Saturation /Contrast /Brightness adjustPTZ ControlYES, built-in RS-485 portUSB MouseYESPower SourceDC 12V 3AKey Lock (Password Protection)YESPower-down recovery functionYESSize (mm)250(W) x 45(H) x 224(D)