How do I secure the timer to the wall?

Use the included mounting template to mark screw locations, then install a No. 8 screw in the upper location, leaving the head protruding 1/8 inch from the wall. Slip the timer over this screw using the keyhole slot, then drive another No. 8 screw through one of the pre-formed holes in the lower back cabinet. Use expanding anchors in plaster or masonry for extra security if needed. (Page 5)