ZOSI HD-TVI 1080P Lite Video DVR Standalone H.264 Recording Network CCTV Security Surveillance DVR Video Recorder System 1TB HDD (QR Code Scan Quick Access, Smartphone PC Easy Remote Access) ZOSI H.264 8 channel 1080P Lite Digital Video Recorder,DVR Equiped with HDMI/VGA/BNC port for multi video output,Plug in Play for easy use. Quick QR Code Scan ,Easy Quick Remote Access Pre-Installed 1TB Hard Drive (expandable up to 4TB) for 12 Days of Continuous Recording at Highest Resolution. Longer Recording Times Up to 30 Days Available with Use of Motion Detection Email Notification and Mobile Push Alerts when Motion Detection,ZOSI VIEW Apps for Live View and Playback on Smartphone Devices under Wi-Fi/ 2G/ 3G/ 4G Network Support USB port Back up , gives you the easiest option of backing up and transferring your video footage to a USB flash drive. If your product stops working in the first year we will replace it