The August Doorbell Cam Pro costs $199 (£155/AU$266 converted).
It has a 1,280×960p resolution.
It also has a built-in motion sensor to alert you to guests -- even if they don't ring the bell.
Adjustable built-in LEDs provide extra light for viewing the video feed at night.
This doorbell measures 2.9x2.9x0.9 inches.
Two-way audio lets you talk with whoever's at the front door through your phone.