A differential sensor is a type of sensor that measures the difference between two or more signals. This type of sensor is used in a variety of applications, from measuring temperature to detecting pressure changes. Differential sensors are able to measure the difference between two signals, which can be used to detect changes in the environment. For example, a differential sensor can be used to measure the difference between two temperatures, allowing for the detection of temperature changes. Differential sensors can also be used to measure the difference between two pressures, allowing for the detection of pressure changes. Differential sensors are often used in industrial settings, such as in manufacturing and engineering, as they are able to detect changes in the environment that may not be visible to the naked eye.