This First Alert DCA4405-520 SmartBridge is a revolutionary, easy to install video security system with First Alert technology that provides a fast, easy connection to your business or home's live video feed through your computer, mobile tablet device or Smartphone while on-the-go. The SmartBridge system allows anyone to easily set up truly secure remote access of home or business surveillance video in less than 5-minutes. Made from high quality aluminum to prevent weathering and rusting, the (4) indoor and outdoor 520-TVL bullet-style cameras have an 80 ft. night vision range, 62.2-degree angle of vision, (30) infrared LEDs and feature a 1/3.6 in. color CMOS image sensor for crisp high-resolution video. The 4-channel DVR (digital video recorder) records at D1 (640 x 480) for higher picture quality and CIF (320 x 240) for maximum recording time. A 500GB hard drive is pre-installed with an optional 2TB maximum capacity. Other features includes a motion detection trigger, alarm trigger, scheduling and manual record settings. The DCA4405-520 system includes an (4) channel DVR, (4) 520-TVL cameras, (4) 60 ft. BNC cables, DVR and camera power supply, 9-way cable power splitter, USB mouse, remote control, RJ45 Ethernet cable, remote access installation disc and quick start instruction guide.