In the broadest definition, a sensor is a device, module, machine, or subsystem that detects events or changes in its environment and sends the information to other electronics, frequently a computer processor.
What is a Sensor? Different Types of Sensors like Temperature Sensor, IR Sensor, Proximity Sensor & Applications of Sensor.
Sensors, detectors, and transducers are devices designed to measure, detect, or respond to specific physical, chemical, or environmental changes. These devices often rely on specialized electronics or sensitive materials to detect the presence of a particular entity or function.