VENTECH DVR 8 Channel 1080n 3 in 1 Hybrid Surveillance recorder Security Systems HDMI Output QR Code Set Up Push Alerts on Cell Phones & Free App P2P (NO Hard Drive Included) p2p 720P 960P 1080P DVR AHD NVR 3 IN ONE Input:analog, AHD & IP Cameras ONVIF compatible (via LAN after proper software configuration) Live View from Cell Phones and Tablets (Free APP downloadable from Apple and Android stores) Support 4CH playback at the same time (Real time) Support 1* SATA port (HARD DISK Not Included) IMPORTANT NOTE: "NOT Compatible with the following systems : CVI-TVI-SDI-SVD, unless the camera has the option to switch to either CVBS or AHD." CHECK OUT our easy configuration tutorials and videos at YOUTUBE "Ventech Videos" channel