Does every device connected to a fire alarm system in Canada have to be ULC Listed?
No. Not everything connected downstream of a fire alarm control (and which is part of a DESIGNED fire alarm system) must be ULC Listed. Many things connected to the relay outputs (often referred to as the “contractor terminals”) don’t have to be either listed or supervised. In many instances fire alarm systems are also monitoring (and controlling) things like fans (for stairwell pressurization or parkade exhaust), dampers, and sprinkler heat trace controllers (to name a few). The switches and relays that provide these (and other) specialized functions are often NOT ULC Listed (in Canada they are usually required to be CSA Listed though). Fire alarm DEVICES however (such as smoke detectors, heat detectors, manual stations, horns, bells, etc.) MUST be ULC Listed in Canada (UL in the US).
