جرس باب هاللو الذكي أسود

Monitor your front door with the Hello Video Doorbell from Nest. Access video on your iOS or Android mobile device from anywhere with an internet connection and Wi-Fi via the free Nest app. When attached to your existing hardwired doorbell, this dual-band Wi-Fi device captures 1600 x 1200 resolution video at up to 30 fps. It features night vision functionality and a 160° diagonal field of view. Additionally, the 4:3 aspect ratio enables you to see people at your front door from head to toe. Two-way audio communication allows you to interact with visitors, while noise and echo cancellation ensure that communication is clear. H.264 video compression manages file sizes while maintaining quality.