Sensor Designing :
Sensors are used to measure physical quantities such as temperature, light, pressure, sound, and humidity. They send signals to the processor. For example: A security alarm system may have an infrared sensor which sends a signal when the beam is broken.
List Of Sensors:
An infrared sensor is an electronic device, that emits in order to sense some aspects of the surroundings. An IR sensor can measure the heat of an object as well as detects the motion.These types of sensors measure only infrared radiation, rather than emitting it that is called as a passive IR sensor breadboard