**Know who’s knocking.** **The doorbell you’ve been waiting for.** Nest Hello lets you know who\'s there, so you\'ll 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 on your doorstep — people head to toe or parcels on the ground. And with 24/7 streaming, you can check in at any time. Or go back and look at a 3-hour snapshot history to see what happened. - HD video - Night Vision - 24/7 streaming - HDR - 160° field of view - Quiet time **Say hello, even when you can’t.** HD Talk and Listen reduces ambient noise so visitors come through loud and clear. And when you can’t answer, quick responses let you reply to visitors with different prerecorded messages. - HD Talk and listen - Noise and echo cancellation - Pre-recorded messages **Your video stays safely in the cloud.** We encrypt our connections. Keep data safe and private. And we work hard to protect your information. - AES 128-bit encryption - Secure, private connections - Two-step verification