Outdoor 3 MP 30 fps Built-in speaker(s) Night vision Black The doorbell youve been waiting for.Nest Hello lets you know whos there, so you never miss a thing. It replaces your existing wired doorbell and delivers HD video and bright, crisp images, even at night. Its designed to show you everything at your doorsteppeople 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.Makes other doorbells seem like dumbbells.Nest Hello can tell the difference between a person and a thing, then alert you. Even if a visitor doesnt ring the bell. With Nest Aware, it can also let you know if it spots a stranger or someone you know.Say hello, even when you cant.HD Talk and Listen reduces ambient noise so visitors come through loud and clear. And when you cant answer, quick responses let you reply to visitors with different prerecorded messages.Installation and compatibilityNest Hello requ