Gate Controller

FIG. 1 is a top left front perspective view of the gate controller of our design; FIG. 2 is a top right front perspective view thereof; FIG. 3 is a top left rear perspective view thereof; FIG. 4 is a front elevation view thereof; FIG. 5 is a rear elevation view thereof; FIG. 6 is a right elevation view thereof; FIG. 7 is a left elevation view thereof; FIG. 8 is a top plan view thereof; and, FIG. 9 is a bottom plan view thereof. The broken lines represent unclaimed subject matter and form no part of the claimed design.