Wireless transmission device

FIG. 1 is a rear left perspective view of an embodiment of a wireless transmission device;

FIG. 2 is a front left perspective thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof, the right side elevational view being a mirror image thereof; and,

FIG. 6 is a top plan view thereof, the bottom plan view being a mirror image thereof.

The broken lines in the figures show environment, structure or boundaries that form no part of the claimed design.