DVR4-SecuraNet Maxi Day/Night Kit - 4 Channel Digital Video Recorder with Networking & 4 Maxi Day/Night Cams Monitor & record up to 4 cameras simultaneously 24/7 4 Maxi Day/Night Cams have high resolution 420 TV Lines CCD video display, aluminum case with sunshield, indoor / outdoor, powerful day / night vision up to 65ft (20m) & more High compression MPEG4 - high resolution & less hard drive space needed with faster streaming than MJPEG models Motion detection records activity to pre-installed 160GB hard drive Perfect for business, retail, large homes, law enforcement, school & more