The Fan switch does meet the specifications as it switches at the correct temperature, of around 90*C. This activates the fan to help cool the coolant.
This is not a thermister as a thermister changes its resistance according to its temperature. The thermo fan switch is obviously a switch and does not vary its resistance until it reaches the point of switching.
The internal operation of this sensor is an NTC resistor, and this changes resistance as the temperature changes.
This is not NTC sensor but a switch!
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