Electronic Deadbolt for a Door

FIG. 1 is a top perspective view of the electronic deadbolt for a door, according to my new design; FIG. 2 is a front view thereof; FIG. 3 is a back view thereof; FIG. 4 is a left side view thereof; FIG. 5 is a right side view thereof; FIG. 6 is a top view thereof; FIG. 7 is a bottom view thereof; and, FIG. 8 is a bottom perspective view thereof. The portions depicted in broken lines form no part of the claimed design.