The ornamental design for an audio/video doorbell, as shown and described.
FIG. 1 is a front perspective view of the audio/visual doorbell according to the present design;
FIG. 2 is a front elevation view of the audio/visual doorbell of FIG. 1;
FIG. 3 is a rear elevation view of the audio/visual doorbell of FIG. 1;
FIG. 4 is a right-side elevation view of the audio/visual doorbell of FIG. 1;
FIG. 5 is a left-side elevation view of the audio/visual doorbell of FIG. 1;
FIG. 6 is a top plan view of the audio/visual doorbell of FIG. 1;
FIG. 7 is a bottom plan view of the audio/visual doorbell of FIG. 1; and,
FIG. 8 is a front perspective view of the audio/visual doorbell of FIG. 1 engaged with a junction box, which is shown only to illustrate an example environment for the audio/visual doorbell.
In the drawings, the broken lines depict portions of the audio/visual doorbell that form no part of the claimed design.