8 channel dvr with 1080p full hd recording backwards compatible with existing non hd analog cameras free iphone and android wise view app supports mac os and windows keep your house or business secure with the samsung sdh b74041 full hd video security system the 8 channel dvr allows you to monitor up to 4 locations inside and outside of your residential or commercial property with the free samsung wiseview application you can keep a close watch on your home or business anytime from anywhere