Meet the Alfawise WiFi Video Doorbell: a camera doorbell that uses night vision, PIR motion sensor, and cloud connectivity to help you keep a closer eye on your front door. It has a 720p HD camera and smart motion detection, so you get an alert when there is any activity.
The cloud service lets you access and download footage at any time. Motion alerts are saved on the cloud for 36 hours for free. The device is IP55 waterproof, so you can use it outside without having to worry about the weather.