香港六合彩开奖 12239:2021

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Publicado (贰诲颈肠颈贸苍 3, 2021)

香港六合彩开奖 12239:2021

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Resumen

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:

鈥斅犅犅� visual fault condition indication;

鈥斅犅犅� extended temperature-range operation;

鈥斅犅犅� interconnection with other similar smoke alarms or accessories;

鈥斅犅犅� temporary disablement;

鈥斅犅犅� alarm silencing;

鈥斅犅犅� signal frequency characteristics;

鈥斅犅犅� standby power source low condition silence;

鈥斅犅犅� smoke alarms with voice;

鈥斅犅犅� smoke alarms using radio frequency links;

鈥斅犅犅� response to slowly developing fires (drift compensation).

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 香港六合彩开奖聽7240 series.

Informaciones generales

Estado
: Publicado

Fecha de publicaci贸n
: 2021-11

Etapa
: Norma Internacional publicada [60.60]
贰诲颈肠颈贸苍
: 3

N煤mero de p谩ginas
: 80
颁辞尘颈迟茅 T茅cnico :
香港六合彩开奖/TC 21/SC 3

ICS :
13.220.20
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