Which of the following statements is true regarding two-wire control circuits?

In two-wire control circuits, the characteristic feature is that they operate at a low voltage, typically ranging between 12 to 24 volts. This low-voltage operation makes them safer for users, as it reduces the risk of electric shock. The low-voltage protection aspect is particularly useful in various applications, including industrial and commercial control systems, where operator safety is a primary concern.

Low voltage in the control circuit allows for easier handling and installation, minimizing the hazards associated with higher voltages. Because these circuits are designed to ensure that control signals are effectively managed without exposing users to dangerous voltage levels, they can be seen as beneficial in promoting safer working environments.

While two-wire control circuits can indeed contribute to safety, they are not exclusively utilized for alarms, nor do they exclusively provide "high-voltage protection." Their primary advantage lies in the low-voltage operation, fostering safety in various applications beyond just alarms, which clarifies why the low-voltage protection statement holds true.