Ring Video Doorbell lets you watch over your home and answer the door from your smartphone, tablet and PC. It sends you instant mobile alerts when people press your Doorbell or trigger the built-in motion sensors. And when you answer the alert, you can see, hear and speak to people on your property from anywhere. With 1080HD video, two interchangeable faceplates and a quick-release rechargeable battery pack, the new Ring Video Doorbell 2 makes monitoring your home even easier than before. It can be powered by its internal rechargeable battery, or you can connect it to existing doorbell wiring for non-stop power.