End-of-line testing ensures that alarms can do what effectively?

End-of-line testing is a crucial procedure in fire alarm systems that verifies the proper functioning of all components within the alarm circuit, including smoke detectors, heat detectors, and alarm notification appliances. This testing ensures that the alarm system can effectively alert occupants in the event of a fire.

By conducting end-of-line testing, technicians confirm that the entire system continuously monitors each device's status and can transmit alarms properly when required. The integrity of the alarm circuit is essential; if a component fails or the circuit is interrupted, end-of-line testing helps identify these issues before they can impair the system's performance during a fire emergency. Therefore, the primary focus of end-of-line testing is to ensure that the fire alarm system reliably alerts occupants, which is critical for safety in any built environment.