sometimes campbell gift a thermometer (like two cables together) with a new datalogger.
what kind of thermometer is? thermocoupe?thermistor? and type.
thermocouple type T (copper constantana)
did you probe it? normally are little blue cables
I started seeing them in the 87th! Maybe thousands.
In the office I find it in every corner! Are little used in the definitive applications and therefore remain in the office.
We use them as "practice" sensors in our Getting Started materials
Updated link to Getting Started materials: https://help.campbellsci.com/CR1000X/Content/shared/Get_Started.htm