Blink Video Doorbell Standalone does not include Sync Module 2. Without a Sync Module, live view and two-way audio are available only in response to a doorbell press or motion event. With a Sync Module (or if you wire with your existing doorbell wiring) you'll get these features anytime on-demand.
Blink Video Doorbell is weather resistant with a seal that protects against water. We recommend mounting it to your home with the included back plate by following these instructions.
Batteries required, even when hard-wired. For Video Doorbell to chime through your existing doorbell wiring, 16 - 24 VCA is required.