Here is a rugged and compact 4 channel solid state video/audio recorder that can take the bumps and jars of emergency vehicle use and other demanding mobile and remote applications. Recording directly to high capacity compact flash cards, this unit can record 1 audio channel and up to 4 video cameras at 30fps (352x224) or full resolution at 15fps (720x480). Record up to 138 hours per gig. Complete with motion detection, alarm inputs, event pre-recording, this super small DVR has it all. Easily swap out memory cards for download using a computer, or play video back directly to any video device right from the recorder. Tamper resistant, the controls are located on the wireless IR remote control so DVR menus are accessible only by authorized personal. Integrates easily into your driver's routine, when the shift is over, employees turn in their keys, paperwork and memory card. A perfect record of the shift, preserved on solid state media for download and archiving. Liability protection, security, and employee action monitoring all in one. Can be set for endless loop recording if desired. Operates on 12 Volts DC.Note this unit is designed to be directly wired into the vehicle