USB 300x Color Quad Security System with 4 Night Vision Cameras & Remote 4 Channel Receiver with USB 2.0. Plug into computer or attach to a monitor 2.4 GHz Color Cameras with 32 LED for low light sensitivity Optimal Long Range Transmission 100 meters (7 meter night vision) Indoor/Outdoor Cameras with video & Audio Detection; temperature & weather resistant Wired Camera & Digital Video Recording Modality