Smart Doorbell

FIG. 1 is a front perspective view of a smart doorbell showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is another rear perspective view thereof;

FIG. 4 is yet another rear perspective view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a left side view thereof,

FIG. 8 is a right side view thereof;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken lines illustrate portions of the smart doorbell that form no part of the claimed design.