I have one of these on my UDS. It calibrated fine with boiling and freezing but is about 30 off in the 250 and higher range.
Old user name was JP7794
Jim - KCBS CBJ
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18.5" WSM (1983 model) | 18.5" WSM (2010 model) | Packer Green Thermapen
| Auber PID Temp Controller | QMaster Senior Temp Controller | Mini WSM | Green Bay Packer UDS