8CH 3K Lite DVR Recorder with NO HDD:This 8CH 3K Lite 4-in-1 wired DVR supports for analog, HD TVI, CVI, and AHD cameras. It allows you to connect up to 8pcs 960H, 720P and 1080P CCTV cameras(support up 1080p). NOTE: This DVR is Not compatible with WiFi camera, IP Camera and PoE camera Versatile Recording Modes: ZOSI DVR supports four different recording modes, including continuous recording, scheduled recording, motion-triggered recording, and recycle recording. This flexibility allows you to tailor your surveillance system to your specific needs and optimize storage usage Mobile Remote Access:Setup with ZOSI Smart and scan QR code to access real image on phone. Check in on your home or business wherever you have an internet connection. You can Live View and Playback on Smart Devices with WiFi or 2G/3G/4G Anywhere Anytime Customizable Advanced Motion Detection and Email Alert: Be notified when there are unexpected movements. Smart notifications with image will be pushed to your smartphone via ZOSI Smart App. And you won\'t miss any moment with remote and local playback No Include Cameras and Hard Drive: This system does not come with cameras and hard drive. Assembling a 3. 5-Inch SATA 500GB to 2TB hard Drive is necessary. DVR can be set to automatically overwrite the oldest internally stored footage or you can transfer those video files by USB to a memory stick or external hard Drive