Xchime Video Doorbell Camera - Wired, 100% Motion Detection

No lag: instantly find out who is at your door and speak with the person on your smartphone in real-time no matter where you are. 100% motion detection, never miss a visitor: sends a prompt mobile alert upon motion detection or when a visitor pressed the doorbell Weatherproof and built to last; operates at -70°F to +150°F; the only video camera doorbell that works normally in extreme cold or hot weather Multiple Users: all family members can set up their own accounts to answer the door at the same time.