A sensor is a device that measures or detects a physical quantity and converts it into a signal which can be read by an observer or by an instrument.
A carbon monoxide detector is a sensor that measures or detects carbon monoxide.
A sensor is a device that measures or detects a physical quantity and converts it into a signal which can be read by an observer or by an instrument.
A carbon monoxide detector is a sensor that measures or detects carbon monoxide.