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US09065987B2 Doorbell communication systems and methods 有权
门铃通信系统和方法

Doorbell communication systems and methods
摘要:
Methods can include using a doorbell to wirelessly communicate with a remotely located computing device. Doorbells can include a speaker, a microphone, a camera, and a button to sound a chime. Some embodiments include using a doorbell to close an electrical circuit that has a sound output device in a way that precludes the sound output device from inappropriately emitting a notification sound.
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