4 Channel D1DVR with HDMI 500 GB HDD and 4 x 480 TVL Cameras (30ft NV) and Smartphone Viewing and free Night Owl Lite App. Night Owl's L-45-4511 is an advanced 4 Channel 960H DVR/ 4 Camera Security System with a 500GB hard drive that is accessible from your Smartphone Tablet PC or MAC . With motion activated email alerts and easy Smartphone access this Night Owl system gives you true 24/7 video security day or night from any location in the world.