Hi @JDRoberts. One frig is a new Kitchen Aid side-by-side stainless with freezer on the bottom. The sensor is at the bottom of the door, close to the edge so the magnet on the other door would trip the contact sensor. The frig is about 30 feet from the hub through a couple walls.
The other is a GE Profile side-by-side frig/freezer. The sensor on that is 1/2 way down and mounted on the center vertical divider separating the frig/freezer about 3 or 4 inches in from the edge so that a magnet mounted on one of the door trays can trip it and closing the door doesn’t hit it when closing. The frig is in the garage about 30 feet away from the hub, through a steel garage door, and a couple walls.
I was concerned about transmitting, but these devices have been excellent. Considering the amount of plastic, steel, and magnetic rubber seals, these devices have never failed.
I have a freezer that I plan on using one of these in:
Here are their other sensors: