GadgetGuy
(Formerly Shermie)
These come in many shapes & forms. They are used in many applications. For instance, there is one for every use, such as inside appliances & even in rooms to know the correct temperature. I have one in both ovens, the fridge & in both freezers. For the outdoor temp, I just ask Alexa what the outside temp is & she'll tell me. Even though the ovens give acurate temps, I keep thermometers in them anyway to know exactly what they are.
