The ornamental design for a base for remote controlswitch, as shown and described.
FIG. 1 is a perspective view of a base for remote control switch, showing my new design;
FIG. 2 is an alternate perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevation view thereof;
FIG. 6 is a rear elevation view thereof;
FIG. 7 is a right side elevation view thereof; and,
FIG. 8 is a left side elevation view thereof.
The broken lines in the drawings illustrate portions of the base for remote control switch and its environmental interface that do not form part of the claimed design.