Night Owl ADV1-44500 4-Channel Complete Security Solution with 4 Indoor/Outdoor Cameras and Free Night Owl Pro Software: * 4-channel smart DVR with pre-installed 500GB hard drive * Free "Night Owl Pro" application * Free CMS software for your PC or Mac * Motion activated push notifications and/or email alerts * View, playback and configure your system anywhere in the world from your smartphone or tablet * 4 x Indoor/Outdoor cameras with 50" night vision