Blink Video Doorbell | Two-way audio, HD video, motion and chime app alerts and Alexa enabled — wired or wire-free (Black)

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Answer your door no matter where you are from your smartphone with 1080p HD day and infrared night video and two-way audio.
Experience long-lasting battery life, custom alerts, privacy settings, and more.
Get alerts when motion is detected or someone presses Video Doorbell. Connect to existing doorbell wiring or pair with a Sync Module (sold separately) to engage live view and two-way audio on demand.
Choose to save and share clips in the cloud with a free 30-day trial of the Blink Subscription Plan or locally with the Sync Module 2 and USB drive (each sold separately).
Designed for every home, go wire-free or connect to doorbell wiring to also sound your existing in-home chime. Without wiring, you can use your Blink Mini camera (sold separately) as an indoor plug-in chime.
Set up yourself in minutes with the two included AA lithium batteries then connect to wifi in the app.
Works with Alexa — receive alerts and answer with two-way audio. When wired or paired with a Sync Module, just ask Alexa to answer the front door.
Includes one Video Doorbell, 2 AA 1.5V Lithium Batteries, 4 Screws, 1 Case Opening Tool. Does not include Sync Module 2 which can be found in all “Systems” above (recommended for optimal use while on battery).