I replaced the sensor on Adagio and could not find an exact match (I forget the model number, but it was indeed on a label on the sensor).

I wrote to Wema, they offered a couple of options and  finally they custom built a 20 sensor unit that was reasonably priced and shipped quicky.

I was extremely pleased with how they worked with me and how the replacement part for and works. 

Gary W.
SM 209, Adagio
Maryland, USA