A tool and method for operating the tool are provided. The tool includes a housing and a power generator, such as a motor, disposed in the housing. The power generator has an operating parameter, such as rotational speed. A trigger member and associated magnet are displaceable relative to the housing. A plurality of sensors each generate an output signal based on movement of the magnet. A controller receives the output signals from the sensors, determines a base digital integer from each of the output signals, concatenates the base digital integers to form a concatenated digital integer. The controller varies the operating parameter based on the concatenated digital integer.