I'll ordering the Auber AT100 and the WRNK-191 probe this weekend hopefully. Chimney gets swept on Feb. 1st and will be installed then (if it arrives by then). Thanks to all who gave guidance to me on this.
You can have it installed about 20 minutes after it arrives. A few notes about this, it is calibrated for celsius, so when you switch to Fahrenheit, you will have to adjust the # offset of degrees for calibration. I used boiling water and ice water to test my calibration, but since it is mainly for high temps, calibrated to the boiling water.
Finding out how to get to the calibration menu was the hardest part.
Set, 0089, set.
Then use arrows to find c-f for celsius or Fahrenheit, then arrows to find PSb
(from their manual)