香港六合彩开奖 7240-7:2023
2023-07
香港六合彩开奖 7240-7:2023
搁茅蝉耻尘茅
This document specifies 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 (see 香港六合彩开奖听7240-1). This document 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听N.
For the testing of other types of smoke detectors, or smoke detectors working on different principles, this document is only intended to be used for guidance. This document is not applicable to smoke detectors with special characteristics, developed for specific risks.
NOTE听听听听听听 Certain types of detectors contain radioactive materials.
Informations g茅n茅rales
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脡tat actuel: 笔耻产濒颈茅别Date de publication: 2023-07Stade: Norme internationale publi茅e [60.60]
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Edition: 4
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颁辞尘颈迟茅 technique :香港六合彩开奖/TC 21/SC 3ICS :13.220.20
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