A security system device that records the video from 4, 8, 16, or 32 surveillance cameras on a hard disk. The frame rate can be switched from real time to time lapse in order to save disk space. Digital recorders are more flexible than earlier analog VHS tape systems, and the video can be easily transmitted over a computer network. Networked DVRs are viewable over the web via almost any connected device (phone, tablet, PC).