The Ring Video Doorbell Pro 2 is hardwired and provides constant power along with innovative and reliable protection for your home. To give you even more precise motion alerts, the 3D motion detection additionally recognizes distance, speed, size, and direction of movement. With the expanded field of view of the 1536p HD full-body video, you can now see even more of the people at your doorstep and check if your packages are delivered properly. Connect a Chime or an Alexa-enabled device to be notified anywhere in your home when visitors arrive. Includes a free 30-day trial of Ring Protect. Requires existing doorbell wiring for power.