What type of signals does a thermistor send to the control board?

Prepare for the National Fireplace Institute Core Knowledge Exam with comprehensive study tools, including flashcards and multiple-choice questions. Each question comes with hints and explanations to boost your success rate!

A thermistor sends temperature-related data to the control board in the form of analog voltage signals that vary based on temperature changes. As the resistance of the thermistor changes with temperature, it alters the voltage signal that is sent to the control board. This voltage can then be interpreted by the control board to determine the current temperature and make necessary adjustments to the system.

The confusion may arise from distinguishing between analog and digital signals; thermistors inherently produce a continuous range of resistance values as temperature changes, which correlates to an analog output. While digital signals consist of discrete values (usually representing binary coding), thermistors operate in a manner aligned with analog signal functionality, making the answer regarding digital signals inaccurate in this context.

Additionally, thermistors do not directly provide pressure data or temperature alarms, though the data they produce can contribute to alarm systems or pressure readings if those parameters are integrated into the broader system design.

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