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The first smart device was created approximately 45 years later.

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g. , visible and infrared light passing through the transparent area 712. Further, in some implementations, the front cover plate 708 includes a microphone aperture 716, and a microphone 1104 is disposed under the front cover plate 708 and coupled to the microphone aperture 716 to receive sound wave entering the microphone aperture 716. In some implementations, the doorbell camera 106 further includes an ALS assembly 714 disposed under the cover glass 705 of the lens assembly 704. The ALS assembly 714 optionally includes a light pipe to direct light entering the lens assembly 704 to an ALS and ALS interface circuit that are optionally located with a distance from the lens assembly 704. In some implementations, the front cover plate 708 is substantially opaque except the button opening 710, the microphone aperture 716, and the camera opening or transparent area 712. In some implementations, the front cover plate 708 includes a substantially opaque area that is distinct from the button opening 710, the microphone aperture 716 and the camera opening or transparent area 712. The microphone 1104 is optionally concealed under the substantially opaque area. Further, in some implementations, an array of IR illuminators 1105 are disposed under the substantially opaque area of the front cover plate 708 and configured to illuminate a field of view of the lens assembly 704 with infrared light in a night mode. In an example, the array of IR illuminators 1105 include a number of e. g.

 

Blandit Etiam

Therefore, IR LEDs having a 940 nm wavelength cause less interference with the image sensor than IR LEDs having an 850 nm wavelength. Further, in some implementations, a heat spreader 1128 is coupled to the IR illuminators 1105 to dissipate heat generated therefrom. The doorbell camera 106 may further include a speaker 1106 contained within a speaker box 1136 that is further disposed in proximity to speaker holes 718. When the speaker holes 718 are located on a bottom rim surface of the device housing 702, the speaker 1106 is placed behind the button assembly 1102 and faces the speaker holes 718. Given that the doorbell camera 106 includes both the microphone 1104 and the speaker 1106, a remote user may review live video streams captured by the camera module of the doorbell camera 106, and have a conversation in real time with the visitor. It is also desirable that the doorbell camera 106 can provide dynamic audio feedback to a user via the microphone 1104 and the speaker 1106.