What is the maximum delay acceptable for lost or delayed signals on fire alarm systems when the primary power fails?

In fire alarm systems, the acceptable maximum delay for lost or delayed signals, especially during primary power failure, is critical to ensure prompt response in emergencies. A delay of 10 seconds or less is specified as the standard to provide a balance between operational reliability and system performance.

This 10-second threshold allows for sufficient time to detect and acknowledge a primary power failure while still ensuring that backup systems, such as battery power or secondary communication paths, activate without excessively prolonged lapses. Maintaining this timeframe is essential because any longer delays could jeopardize the timely notification of occupants or emergency services in the event of a fire, potentially increasing the risk of harm.

Ensuring that the fire alarm system can effectively manage signal transmission without exceeding this 10-second delay is a key component in maintaining compliance with established safety standards and facilitating a rapid response during emergencies.