Mobile Phone Intelligent Control: The doorbell can be controlled by APP, automatical work model, intelligent and portable. Up to 4 users may view the video feed, but onl-y 1 user can use the direct intercom.Compatible With ios and Android Devices HD IR Night Vision Camera: The Smart Wireless Remote Video Doorbell High definition clear video with 155 viewing angle, display the details in front of your door,reliable and practical, Equipped infrared night vision, automatically open at night Real-time Two-way Audio : The Video Doorbell is equipped with a Passive Infrared Radiation sensor, detecting the slightest motion at the entrance.Phone alerts you when visitors are at your front door. Hear and speak to people at your door from your mobile device with built-in microphone and speakers PIR Motion DetectionYou can see clearly on every face at the door, don't be afraid to open the door. Real-time alarm, 155 wide-angle lens, 720 HD video, two-way conversation, remote wake-up. At the same time, you can also capture photos or video clips at any time and store them in your phone Easy to Install:You can complete the setup in less than 3 minutes without using any complicated tools. HD Night Vision Monitoring Doorbell video doorbell is durable. Add anti-theft function, so you don't have to worry about the doorbell being stolen