We claim the ornamental design for a barcode reader module, as shown and described.
FIG. 1 is a front perspective view of a barcode reader module of the present invention;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a side view thereof;
FIG. 6 is an opposite side view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines show parts of the frame unit for the barcode reader module that represent unclaimed subject matter and form no part of the claimed design.