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CIS — Common Intelligibility Scale

The measure used for speech intelligibility in voice communication systems. Ontario requires loudspeakers to achieve 0.70 on the CIS.

Read more: Who can legally work on fire alarms in Ontario

Fire Alarm Academy

Canadian fire alarm training built on CAN/ULC standards and the Ontario codes — taught by a licensed 309A electrician who does the work.

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Disclaimer: Fire Alarm Academy is an educational course. It is not a certification, licence, or accredited program, and it is not affiliated with or endorsed by the Canadian Fire Alarm Association, ECAO, ULC Standards, or any authority having jurisdiction. Course content does not replace the CAN/ULC standards, the Canadian Electrical Code, the applicable building or fire code, manufacturer instructions, or the direction of your AHJ. Always verify against the edition adopted in your jurisdiction.

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