B-1.1, r. 3 - Safety Code

Full text
360. Carbon monoxide alarms must
(1)  conform to CAN/CSA-6.19, Residential Carbon Monoxide Alarming Devices;
(2)  be equipped with an integrated alarm that meets the audibility requirements of CAN/CSA-6.19, Residential Carbon Monoxide Alarming Devices;
(3)  be installed according to the manufacturer’s recommendations.
O.C. 1263-2012, s. 1.