The KTY81/222.112 is a silicon temperature sensor from NXP. It is a thermistor, meaning it measures temperature using the electrical resistance. It is a negative temperature coefficient (NTC) thermistor, meaning it becomes less resistant as its temperature increases. This sensor is a three pin device with a ceramic case and leads. It can measure temperatures between -40°C and 160°C with a B value of 3435K, and an accuracy of 1.5°C. The KTY81/222.112 is used in automotive, industrial, and consumer applications.