The purpose of a supervisory signal in a fire alarm system is to indicate a condition that could impair the proper operation of the fire protection system, but does not necessarily indicate an active fire. Unlike alarm signals, which indicate an actual fire emergency, supervisory signals alert building personnel or a monitoring company to potential problems that need to be addressed to maintain the system's readiness. These signals are crucial for preventing system failures and ensuring that the fire protection system will function as intended when needed. Several specific conditions can trigger a supervisory signal. One common example is a low wat....
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