The Blink Smart Video Doorbell 2 lets you answer your front door from anywhere, so you never miss a visitor or delivery. Instant motion alerts are sent straight to your phone even if the doorbell isn't pressed. You can have a quick two-way talk with whoever's at the door using the Blink app - handy for deliveries or guests. And thanks to its HD video with night vision, you'll see everything clearly even after dark.Good to know- You can get alerts and video on your Alexa devices with the Sync Module Core- Save and share clips in the cloud with a Blink Subscription Plan or locally with the Sync Module 2 and a USB drive- Wire it to your existing doorbell to use your current chime, or pair it with a Blink Mini 2 for indoor chime- You can use voice commands with Alexa, IFTTT or other smart assistants to answer the door and control your system- It comes with batteries that last up to two years, so you won't have to worry about constantly changing them_________________________________ Please note: Blink Subscription Plan, hub / bridge, Sync Module, Blink Mini 2 and USB drive for local storage are sold separately.