ELECCTV 8CH 720P HD-TVI Security DVR Recorder System and (4) 2000TVL Outdoor Fixed Dome Cameras with IP66 Weatherproof Day/Night Vision, Motion Detection & Email Alert Elecctv "8CH DVR w/ 4 cameras kit" is superior to a "4CH DVR w/ 4 cameras", it provides you the flexibility to extend additional cameras . Amazing 4-in-1 DVR which supports Analog, HD-TVI, CVBS and IPC. Newest 8 channel 1080h lite H.264+ DVR with 720p indoor/ outdoor cameras for true day and night monitoring with 115ft IR range. Note: If you need more security cameras, please search ASIN ON AMAZON: B00GLSZNZ2.Elecctv newest cameras all contain 18 SMD Light,brighter and larger vision range(up to 36m). Get set up quickly and easily: You could scan the QR code via mobile device using our free SgsEye View app (available on iOS/Android). Network function has DHCP,PPOE,DDNS,SMTP,SNTP,FTP,UPNP,P2P and 3G.It can be quickly and easily setup by anyone. Instantly see live video using your computer, tablet, iPad,iPhone or android phone from anywhere. Intelligent motion detection email alert with images; Smart playback available with customizable searching area (needs an internal hard disk drive or can't record or playback, kit with HDD ASIN ON AMAZON: B00JD58VA4.Support Dropbox,Goole Drive Eloud. Dual Stream. All ELECCTV products with 1 year warranty,have passed ISO 9001 certified and HDMI Senior Member certified. All systems CE & FCC certified with qualified power supplies. No harmful interference is produced by the device. We have upgraded the SATA HDD max supported storage capacity to 8TB HDD (Not Included). Support USB 2.0 devices, easy backup with Network, USB hard disk, USB burner, SATA burner.