In the spirit of keeping this succinct, I've replaced a GE system with a Ring system. I ran them side-by-side for awhile and am happy to make the move.
Since the door sensors were attached via adhesive, the paper with the DL codes were damaged.
I'd love to throw these up on Ebay, but don't want to end up refunding someone after they get stuck with non-register-able sensors.
This is the sensor model as per my order form from 2012…
GE 60-688-95 | NX-454 Wireless Micro Door Window Sensor
Read more: reddit.com