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 Owls 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.