The QT526-844-1M is perfect for the skillful homeowner or enterprising pro who needs a multi-channel DVR with premium features. All of our QT5 DVRs have a massive amount of administrative control that you can use to your advantage for your residence or company. Manage the DVR?s menus and configure it to meet your needs effortlessly. You have the option of real-time full D1 recording and you can save up to a whopping four terabytes of footage to the pre-installed hard drive. When searching for files, choose from time, motion detection event, or alarm triggered event options. Transfer or back up files easily to a PC, or USB flash or hard drive and have surveillance footage on hand when you need it. While watching live or playback, you can take still shots of footage and even apply 2X digital zoom. The eight premium dome and bullet surveillance cameras are weatherproof. The four bullet cameras have 36 infrared LEDs that easily capture intruders and activity, with a 60 ft. night vision range, excellent field of vision, and 520 TV lines of resolution. The dome cameras? design deters vandalism by providing a shield over the lenses. Each has 23 infrared LEDs, a 40 ft. night vision range and 480 TV lines of resolution. Avoid purchasing another monitor or using your current monitor/TV by connecting the DVR to the included Q-See monitor!