Update: Back in stock!
Ring Video Doorbell Pro – Link 
Amazon has currently got this marked down to $199.99 w/ free shipping.
This normally sells for $249 and is now the lowest it has ever been on Amazon.
- Versatile Smartphone compatibility: works with select iOS and android devices,Wi-Fi connectivity-2.4 GHz or 5 GHz Wi-Fi: makes it easy to link with your home wireless network
- Download the Ring app to view footage and receive alerts on your mobile device: you can keep an eye on your home and speak with visitors, all from a remote location
- Record wide-angle high-definition video: maintain a clear view of your home’s entrance for optimal security, optional cloud recording lets you view footage at a later time
- Automatically record footage and receive alerts when motion is detected: motion sensors let you know when someone is at your door
- Night vision: infrared LED’s allow you to record footage, even in dim lighting,See and speak with visitors: 2-way audio with noise cancellation with crystal clear 1,080p HD video