Thermistors are temperature-sensitive resistors that change resistance with temperature. They are commonly used in electronic devices for temperature measurement and control. Their resistance can be used to calculate the temperature of the surrounding environment.
(1) Their are therocouples of J and K type, and others J-K most often used. (2) RTDs 2,3,4 wire types. (3) Thermisters
Thermistors can be used for temperature sensing and control in devices such as thermostats, air conditioning systems, and refrigerators. They can also be used in medical applications for monitoring body temperature or in automotive applications for measuring engine temperature.