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Ring's New Doorbell Has 1080p Video & A Swappable Battery – TechCrunch
广告Combine Alexa with Ring for hands-free home monitoring. Always know when someone is there. Discover why millions of neighbors trust Ring to keep their home & neighborhood safe.
Smart Home Security · Works with Alexa · Optional 24/7 Monitoring · Stop Crime In Its Tracks
Models: Ring Video Doorbell, Ring Alarm System, Ring Video Doorbell 2
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