... 4.1 pcs LCD monitor Economical 4ch D1 real time Mini CCTV DVR kits,4ch Digital Video recorder kits, Stand alone DVR kits, CCTV DVR kits1.4ch D1 real time ... ,alarm trigger recording modeRecording playbackSupport 1to 4 ch playback simultaneouslyBackup waySupport HDD,Network,USB,USB ... backupModelDH8704Video storageHDD ,networkVideo input4ch BNCAudio input1 ch RCAVideo output1ch BNC,1ch VGA(support 800 ...