This International Standard specifies requirements, test methods, performance criteria, and manufacturer's 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 International Standard should be used only for guidance. Smoke alarms with special characteristics and developed for specific risks are not covered by this International Standard.This International Standard allows, although it does not require, the inclusion within the smoke alarm of facilities for the following:- visual fault condition indication;- extended temperature-range operation;- interconnection with other similar smoke alarms and/or accessories;- alarm-silencing facility.Where such facilities are included, this International Standard specifies applicable requirements.This International Standard does not cover devices intended for incorporation in systems using separate control and indicating equipment.Certain types of smoke alarms contain radioactive materials. The national requirements for radiationprotection differ from country to country and they are not specified in this International Standard. Such smoke alarms should, however, comply with the applicable national standards, which should be in line with the recommendations of the Nuclear Energy Agency (NEA) of the Organisation for Economic Co-operation andDevelopment (OECD).

First published as AS 12239-2004.