FIG. 1 is a front elevational view of a sensor substrate according to our new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left-side elevational view thereof;
FIG. 4 is a right-side elevational view thereof;
FIG. 5 is top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a partial front elevational view as indicated in FIG. 1;
FIG. 8 is a partial front elevational view as indicated in FIG. 7; and,
FIG. 9 is a partial front elevational view as indicated in FIG. 7.
The broken lines in the figures depict portions of the sensor substrate that form no part of the claimed design. The figures are illustrated with various gray levels of surface shading to show contrasting appearance of different portions of the design . No particular color or design pattern is claimed.