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Nest Doorbell (Wired) lets you know who’s there, so you never miss a thing. It replaces your existing wired doorbell and delivers HD video and bright, crisp images, even at night. It’s designed to show you everything at your doorstep — people head to toe or packages on the ground. And with 24/7 streaming, you can check in anytime. Or go back and look at a 3-hour snapshot history to see what happened.*