A _______ is often used to allow an operator or technician to change a machine from the automatic mode to the manual mode.

A selector switch is commonly employed in control systems to enable operators or technicians to switch a machine from automatic to manual mode. This type of switch provides multiple settings or positions, allowing for a clear and distinct change in operational modes. It facilitates an intuitive transition, ensuring that the operator has direct control over the machine's functions when needed.

In contrast, a toggle switch generally serves a simpler purpose, typically turning a device on or off rather than changing modes. A pilot light is used to indicate the status of a device, such as whether it is on or off, but does not provide functionality to switch modes. A push button switch is primarily designed for momentary control actions, such as starting or stopping a process, rather than changing operational modes. The versatility and distinct functionality of a selector switch make it the appropriate choice for mode adjustments in motor control systems.