JOOAN 7216N 16CH 960P 8CH 1080P 4CH 5M NVR CCTV System Surveillance Video Recorder for IP Cameras Support ONVIF Protocol H.264 high profile compression, realtime 720p Record resolution. CCTV NVR 16CH Network HD Video Recorder ONVIF For IP Camera. Supports VGA(the max is 19201080) and HD-OUT(the max is 19201080) simultaneously output; Pretty heat emission technology allows long life span. Support P2P Cloud Service, by Cloud Access, Cloud Monitoring, Cloud Forward. Remote viewing: Smartphone/tablet PC remote viewing anytime anywhere for residential surveillance uses and business surveillance uses. Pls download and install xMEYE for smartphone client remote viewing, pls scan the DVR recorder serial number (Right-click the mouse to select guide), please make sure the NAT status is connected( pls make sure the IP address of dvr is same segment as your router's ). Pls note this unit does not come with hard disk. Hope you enjoy the product, and any problem or suggestion pls do not hesitate to contact us firstly. Thanks a lot ! ! One year quality warranty,Lifetime Tech Support. Any problem or suggestion pls do not hesitate to contact us firstly. Thanks a lot ! !(Customer service email: technicalreply@qacctv.com; Skype: market@qacctv.com).Service online: 5 PM ~ 2 AM (PST).