What does nonautomatic control imply in electrical terms?

Nonautomatic control in electrical terms refers to a system or device that requires some form of personal intervention for it to function. This means that the user must actively engage with the device to initiate its operation, whether by turning it on, adjusting settings, or responding to a specific condition.

This concept contrasts with automatic control, where devices can function independently based on pre-set criteria without the need for manual input. Nonautomatic systems are often simpler and give users direct control over their operation, which can be essential in situations where precise human judgment is needed.

The other options describe characteristics of control systems that either operate independently (the second option) or rely on specific programming (the third option). The fourth option implies a modern interface through a smartphone app, which is not inherently related to whether a system is automatic or nonautomatic. Thus, recognizing that nonautomatic control hinges on the necessity for personal intervention helps to clarify its definition in the context of electrical systems.