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Smoke alarms using scattered light, transmitted light or ionization
This document specifies **requirements, test methods, performance criteria and manufacturers' instructions** for smoke alarms that operate using scattered light, transmitted light or ionization, and are intended for household or similar residential applications.
For the testing of other types of smoke alarms, or smoke alarms working on different principles, this document is recommended only as guidance. Smoke alarms with special characteristics and developed for specific risks are not covered by this document.
This document allows, although it does not require, the inclusion within the smoke alarm of facilities for the following:
Where such facilities are included, this document specifies applicable requirements.
This document does not cover devices intended for incorporation in systems using separate control and indicating equipment. Such systems are specified in the ISO 7240 series.
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