Blink Outdoor 4 (4th Gen) cameras...

Lend a hand offer protection to your home inside and outside with Blink Out of doors 4, Wired Floodlight Camera, and Video Doorbell.
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 rise up to two years of power on your Out of doors 4 cameras and Video Doorbell with the included AA lithium batteries.
Motion detection alerts — Be alerted to motion and customize motion zones from your phone. Even set lights on Wired Floodlight Camera to trigger from the Blink Home Monitor app.
Person detection —With Out of doors 4 and Wired Floodlight Camera, get alerts when a person is detected with embedded computer vision (CV) as a part of an optional Blink Subscription Plan (sold one after the other).
Save and share clips — Make a choice to store events in the cloud with a free 30-day trial of the Blink Subscription Plan or in the community with the Sync Module 2 (included) plus a USB drive (sold one after the other).
Works with Alexa — Connect to an Alexa-enabled device to engage live view, arm and disarm your system, and more the use of your voice.
Includes four Out of doors 4 cameras, one Wired Floodlight Camera, one Video Doorbell, one Sync Module 2, six mounting kits, 10 AA batteries, 1 USB cable, and 1 power adapter.