What does the R next to a heat detector symbol indicate?

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Pass the California Alarm Company Operator Exam. Study with flashcards and multiple choice questions, each with hints and explanations. Prepare for your exam with confidence!

Multiple Choice

What does the R next to a heat detector symbol indicate?

Explanation:
R indicates a rate-of-rise heat detector. This type detects a rapid increase in temperature, and it will alarm when the temperature climbs quickly, even if the final temperature hasn’t reached a fixed threshold. That’s different from fixed-temperature detectors, which trigger at a specific, steady temperature. In diagrams, the R is used to distinguish rate-of-rise detectors from other device types, and it isn’t signaling a remote indicator, a resettable feature, or a radiation detector.

R indicates a rate-of-rise heat detector. This type detects a rapid increase in temperature, and it will alarm when the temperature climbs quickly, even if the final temperature hasn’t reached a fixed threshold. That’s different from fixed-temperature detectors, which trigger at a specific, steady temperature. In diagrams, the R is used to distinguish rate-of-rise detectors from other device types, and it isn’t signaling a remote indicator, a resettable feature, or a radiation detector.

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