During an annual inspection, which method is required to verify the functionality of a smoke detector?

Question: During an annual inspection, which method is required to verify the functionality of a smoke detector?

Answer options:

• Magnet test
• Output voltage check with a multimeter ✅ Introduction of smoke or simulated smoke into the chamber
• Verification of the serial number on the FACP

Correct answer: Introduction of smoke or simulated smoke into the chamber

Explanation: CAN/ULC-S536 requires smoke detectors to be tested in place for smoke entry through the sensing chamber. Simply using a ceramic heater or magnet does not verify the ability of smoke to enter the chamber.