This 8 Channel DVR is compatible with all 1080P, 960P, 720P, TVI, AHD, CVI and Traditional Analog Cameras. It has 4TB storage for continuous recording. PC/tablet/Smartphone remote viewing with easy installation guide included (using Goodeye or XMeye Free Apps for mobile phones) Motion detection & Email alert function: By customizing settings you can use this function to receive email alert when there is an unexpected motion detected. Supports USB port Back up, gives you the easiest option of backing up and transferring your video footage to a USB flash drive. You also can Back Up through DVRs Client Software by Windows PC. One Year Warranty + Free tech support