Answer your door from anywhere with Video Doorbell and help protect your home inside and out with our wirefree Outdoor 4 smart security camera. See and speak from the Blink app Experience 1080p HD live view, infrared night vision, and crisp twoway audio. Twoyear battery life Set up yourself in minutes and get up to two years of power on each device with the included AA lithium batteries and Sync Module 2. Enhanced motion detection with Outdoor 4 With our allnew Outdoor 4, enjoy a wider field of view and be alerted to motion faster with dualzone, enhanced motion detection. Save and share clips Choose to store events in the cloud with a free 30day trial of the Blink Subscription Plan or locally with the included Sync Module 2 and USB drive sold separately. Designed for every home Wire Video Doorbell to sound your existing inhome chime or go wirefree with inapp chime alerts. You can even use Blink Mini sold separately as an indoor plugin chime. Works with Alexa Connect to an Alexaenabled device to engage live view, arm and disarm your system, and more using your voice. Includes one Video Doorbell, three Outdoor 4 cameras, one Sync Module 2, eight AA lithium batteries, four mounting kits, one USB cable, and one power adapter.