The First Alert CM5604PBB SmartBridge High-Resolution Night-Vision 560-TVL Cameras are ideal for syncing with an existing security system. The SmartBridge system allows anyone to easily set up truly secure remote access of home or business surveillance video in less than 5-minutes. Just plug the cameras into the DVR and power adapter using the cables provided and enjoy instant security. Made from high quality aluminum to prevent weathering and rusting, the (4) indoor and outdoor 560-TVL bullet-style cameras have an 80-foot night vision range, 62.2-degree angle of vision, (30) infrared LEDs and feature a 1/3.6-inch color CMOS image sensor for crisp high-resolution video. The First Alert CM5604PBB SmartBridge High-Resolution Night-Vision 560-TVL Cameras come with a 1-year limited warranty and free technical support.