Thanks for the reply. I realize the meat thermometer could be a little inaccurate so I have done several tests.
This AM the tub was set to 95deg. Temp on the frontside display shows 101. My thermometer shows 89deg. MEATER thermometer shows 90. The new regulation sensor is sitting in the tub and plugged in. I know it's in low because you can easily feel low 90's vs 100.
To heat the tub up to over 100 degrees it requires me to pull the new sensor out of the tub. When I placed it back in the tub it displayed 111 then " HL".