Transmitter of dog training collar

FIG. 1 is a top right perspective view showing a new transmitter of dog training collar, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a side view thereof; and,

FIG. 7 is an opposite side view thereof.

The broken lines depict unclaimed features of the transmitter, shown for purposes of illustration, and form no part of the claimed design.