本标准的目的是规定使用散射光、透射光或电离的点型烟雾探测器的要求、试验方法和性能标准，用于建筑物中安装的火灾探测和报警系统（参考ISO 7240.1）。本标准还包括点型烟雾探测器，其包含一个以上的烟雾传感器，并根据这些原理工作。附录N中给出了此类探测器的附加要求和试验方法。

The objective of this Standard is to specify requirements, test methods and performance criteria for point-type smoke detectors that operate using scattered light, transmitted light or ionization, for use in fire detection and alarm systems installed in buildings (refer to AS ISO 7240.1). This Standard also covers point-type smoke detectors that incorporate more than one smoke sensor operating on these principles. Additional requirements and test methods for such detectors are given in Annex N.