Need extra security for your home, the office or your property? We've combined a quality 4-channel DVR with a pre-installed 500GB hard drive and four weatherproof color cameras to give you everything you need in a low-priced package. The Mac and Windows compatible DVR allows you to monitor your property anywhere you have a high-speed Internet connection - worldwide. Set it to email you when motion is detected, the hard drive is full, or if video or network loss has occurred. View live or playback footage from all of your cameras on your 3G/4G smartphone, and stream live video directly to your PC or to your iPhone, iPad, BlackBerry, Android or other mobile device using Windows Mobile Professional or Symbian® OS. The DVR is multiplex so you can simultaneously record, view live or recorded footage, play back footage, back-up files and remotely monitor and manage without any recording loss. Enjoy key features like broad administrative control, 2X digital zoom, D1 and CIF recording resolution options, H.264 video compression, easy backup to a USB flash or hard drive, four weatherproof, high-quality cameras with a 40 foot night vision range and more. Q-See offers its Centralized Management System (CMS) software for its QT-series DVRs Monitor multiple QT-series DVRs from a single computer using just one, simple log-in. Control each DVR just as if you were sitting at it! With 24 infrared LEDs at 0 lux, these cameras deliver the powerful night vision you need in low to zero light. They are ready-made with pre-assembled, 3-axis mounts for easy placement on a wall, ceiling, or other flat surface.