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. , a Bluetooth communication link. Optionally, the camera module 1004 is configured to in accordance with a determination that the input AC voltage is not greater than the supply threshold, activate a low power mode. In the low power mode, the images are optionally captured and/or transmitted to the server at a lower resolution and a lower frame rate, and local image processing may be disabled to conserver power. In some implementations, the doorbell camera 106 alternates between a first camera mode and a second doorbell mode during its normal operation. The bypass unit 1012 is configured to operate in the first camera mode when it is determined that no user press has been applied to the button.