The ornamental design for an electronic keycontrolunit, as shown and described.
FIG. 1 is a perspective view of an electronic key control unit according to our new design, as viewed from the front, above and to the left of the device;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines in FIGS. 1-7 are for illustrative purposes and form no part of the claimed invention.