What is the role of a resistor in alarm systems?

The role of a resistor in alarm systems is primarily related to supervising the system. In this context, resistors can be used in various monitoring applications to create a circuit that allows for the detection of faults or problems within the system. For instance, resistors can be employed in end-of-line (EOL) configurations, which enable the system to monitor integrity and alert users to issues such as wire cuts, shorts, or incorrect resistance values.

In supervised circuits, resistors help maintain a specific voltage or current level, providing a means for the control panel to determine whether the system components, like detectors or sensors, are functioning correctly. If a resistor is out of its expected range due to an open or shorted circuit, the control panel can interpret this change as a signal to indicate that immediate attention is needed.

The other choices do not align with the typical functions of resistors in alarm systems. While amplification and energy storage are crucial functions in electronic circuits, they do not pertain to resistors which primarily limit current flow rather than amplify signals or store energy. Similarly, the connection of wireless devices involves communication protocols and transceivers rather than resistors, which are designed to provide resistance in a circuit rather than facilitate wireless connections.