Temperature sensors are use to respond with the change in the temperature.
There are two types of temperature sensors
contact temperature sensor
noncontact temperature sensor
Contact temperature sensors measure their own temperature. One infers the temperature of the object to which the sensor is in contact by assuming or knowing that the two are in thermal equilibrium, that is, there is no heat flow between them.
Noncontact temperature sensors include many different types, but all share one set of unique features: they are often involved with an optical property of materials called spectral emissivity or spectral emittance.
Temperature sensors can be used in many robotics applications where the robot has to respond with the temperature. These sensors are helpful in sensing the temperature.