Blink Video Doorbell + 3 Outdoor 4 smart security cameras (4th Gen) with Sync Module 2 | Two-year battery life, motion detection, two-way audio, HD video, Works with Alexa

Answer your door from anywhere with Video Doorbell and help protect your home inside and out with our wire-free Outdoor 4 smart security camera.
See and speak from the Blink app — Experience 1080p HD live view, infrared night vision, and crisp two-way audio.
Two-year 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 all-new Outdoor 4, enjoy a wider field of view and be alerted to motion faster with dual-zone, enhanced motion detection.
Save and share clips — Choose to store events in the cloud with a free 30-day 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 in-home chime or go wire-free with in-app chime alerts. You can even use Blink Mini (sold separately) as an indoor plug-in chime.
Works with Alexa — Connect to an Alexa-enabled 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.