This Standard sets forth requirements for smoke detectors and mechanical guards to be employed in ordinary indoor locations in accordance with the following:
IN THE UNITED STATES
a) National Fire Alarm Code, NFPA 72. IN CANADA
b) Standard for the Installation of Fire Alarm Systems, CAN/ULC-S524;
c) National Building Code of Canada; and
d) National Fire Code of Canada.

This standard covers the following types of detectors:
a) Detectors intended for open area protection and for connection to a compatible power supply or control unit for operation as part of a fire alarm system.
b) Detectors intended solely for control of releasing devices such as electromagnetic door holders, fire dampers or smoke dampers.
c) Detectors intended for both applications described in (a) and (b) above, and
d) IN CANADA, duct detectors.