Originally Posted by onehundred80

20028 were known to work when setup by the dealer, nobody confirmed that the 20066 worked. These have a unique code in them, they are not the clonable type. The Schrader 33500 sensor is a clonable sensor and has been confirmed to work by Reliableron in BC. It is sold as a replacement for 90% or more of the sensors used to date and works in the 315 or 433 MHz frequencies the Crossfire uses.
The 20066 works in only one of the frequencies and the 20028 works in the other frequency, I have forgotten which is which.