Question

what is the sensor and how does it work

Answer 1

A sensor is a device that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure, or any one of a great number of other environmental phenomena

Answer 2

A sensor is a device that detects and responds to some type of input from the physical environment. The specific input could be light,heat, motion,moisture,pressure,or any one of a great number of other environmental phenomena.