The Google Nest Doorbell will allow you to see and talk to visitors, even while away from home. The device can stream high-resolution video with a wide field of view, including in the dark. Thanks to onboard machine learning, it can alert you if it notices a person, a package delivery, an animal, or a vehicle.
Best of all, the weather-resistant gadget is battery-powered and easy to install. There are several cool colors to pick from.