What is a temperature sensor?
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A temperature sensor is similar to a thermometer.
There are 2 types of temperature sensors.
Contact Sensors
These types of sensors require contact with whatever you are trying to get the temperature of. They mostly use 2 pieces of metal that send a signal when either of them change. Some can be cheap and have a high range but aren’t too accurate but others cost lots of money but will get more accurate results
Non-Contact Sensors
Non-Contact sensors are things that scan and detect heat radiating off of objects. They have a wide range and are typically used in infrared imaging and taking temperatures without using anything like a contact thermometer would meaning it wouldn’t have to be something that directly touches anything.