You mean the left box surface? That’s the only one which is similar in the case of my receiver; it is actually a different size but unlike the other surfaces it does have G6 logos but does not have an “icon” (AppleTalk) of either a sensor or a receiver.
Clearly their stock control relies on having the boxes all stacked the same way. They didn’t design the boxes for us.
Diabetic Squirrel Rule: always obtain more nuts at the first available opportunity. You can never have too many nuts.
John Bowler