DVR 400x Color Quad Security System with 4 Night Vision Cameras Indoor/Outdoor Cameras with video & Audio Detection; temperature & weather resistant 2.4 GHz Color Cameras with 12 LED for low light sensitivity Optimal Long Range Transmission 100 meters (7 meter night vision) View and record all 4 cameras simultaneously or one at a time view and control remotely over the internet with high quality capture card and digital recording software