Customize your motion zone settings to focus on areas you need to protect. Runs on a built-in, rechargeable battery. Receive real-time mobile notifications when someone is at your door.Monitor what matters most with infrared technology-even when it's dark. Works with Alexa so you can hear audio announcements when anyone presses the doorbell or triggers the motion sensors. With Quick Replies you can answer the door with preset responses, or save time and ask visitors to leave a message with just a few taps. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Doorbells". The seller is "yumelectronics" and is located in this country: US. This item can be shipped to United States.