Review on OSkool AutoVac Accessory: A Smart Solution for Automatic Vacuuming by Phillip Reed

The switch works well but there was only one "ear" to attach to the wall and it didn't sit flush with the back. Tightening the screw will push the bottom out. If you leave the screw loose, it will move. I had to make a spacer to place it behind the mounting ear so it would fit snugly against the wall. Requires two tabs for flush mounting.