Ring Video Doorbell Pro – Link

Amazon has this marked down right now to its lowest ever at just $199.99 w/ free shipping.

• Connects to existing doorbell wiring (wiring required), so you never have to charge a battery. This model is not battery operated.
• Get instant alerts when visitors press the button on your doorbell or trigger motion sensors.
• Watch over your home in crystal-clear 1080p HD video.
• Protect your home-day or night-with infrared night vision.
• Live View enabled: Check-in on your property at any time with video on demand.