NFPA 72 requires annual testing to ensuretrouble signalsare correctly transmitted to the off-premises monitoring location (e.g., central station).
NFPA 72 (2022), Table 14.4.3.2 – Testing Frequencies and Methods:
Under “Off-Premises Transmission Equipment,”trouble signalsare testedannually.
This ensures that the system will properly report malfunctions.
Correct answer: D. Annually
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