My idea is to use the temperature sensor to convert my chest style freezer into a refrigerator. So when the temperature rises to 5 degrees Celsius a relay will turn the freezer on, when it drops to 1 degree it will turn the freezer off again.
I know that there is a margin of two degrees, i calculated on that. But my question is now what if those 2 degrees will result in a "negative reading"(so in reality it's 1 degree but the sensor is 2 degrees off so it thinks is -1 degree). It is made to read temperatures betweem 0 and 50 degrees celsius.
And, what if i put the sensor in the freezer when it's freezing minus 4 degrees? will it read anything will it give an error will it break?
I hope any of you have some info before i go for the trial and error and risk breaking the sensor.