YI 4pc Home Camera, Wi-Fi IP Security Surveillance System with Night Vision for Home, Office, Shop, Baby, Pet Monitor with iOS, Android, PC App - Cloud Service Available Records in 720p HD to capture clear images for your records and use two-way audio to communicate with loved ones, or scare off intruders. The camera uses wireless communication technology, but still needs AC power to keep it working properly. 111 wide-angle lens with 940nm infrared non-invasive sensor and 4x digital zoom. See up to 3 meters in pitch black with the non-invasive infrared night vision. Reliable Wi-Fi connectivity to access your camera with YI Home App. View up to 4 live camera feeds through one screen with YI Home App for PC/Mac. Get one month free trial when you subscribe to YI Cloud, the best anti-theft and cost effective cloud solution. With up to 5 devices on one subscription all your footage is safe from theft and damage. All data traffic between device/App to the server are secured with financial-industry standard encryption. Real-time streaming to your phone & activity alerts when motion is detected. YI Home App allows you to customize your settings according to your preferences: defined activity regions, camera sharing, customize alert schedules, and more. Available for iOS and Android. 12-month warranty included.