Does anybody know what type of sensor bead the HCF82 uses? I'm looking to see if I can modify one to use a remote floor sensor... 10K would be convenient but I know Honeywell have a tenancy to use 20K sensors. Thinking about ordering one up to have a play with but was hoping someone might know to help before I did that.
A HR92 would be even better (I have 2 spare) but I can't even find the sensor bead on that surface mount PCB... So if anyone knows where that one is and has a close up pic that could work as well.

Thanks in advance.