The Blink Video Doorbell is on sale for a record low price of 30

Amazon is running a sale on its Blink home security devices. Among the items that have seen a price drop is the Blink Video Doorbell, which is available for a record low of 30. That's half what you might otherwise pay for it. The doorbell allows you to answer your door using your phone. You can see who rang your doorbell via a 1080p video stream (there's an infrared night vision mode) and chat to them using the two-way audio feature.