On-site area alarm

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GB/T 50493—2019: The GDS shall divide the devices or units into alarm zones according to the warning range of the combustible gas and toxic gas detection and alarm systems, and then install on-site area alarms in accordance with these alarm zones. When the number of detectors in the alarm zone is less than 10, the ambient noise level is below 85 dBA, and the detectors on site are equipped with integrated acoustic and optical alarms, then it is not necessary to install a zone alarm at that location. On-site area alarms are installed at the main entrances and exits of the production site as well as in areas with high noise levels (where the noise level exceeds 85 dB(A)), with the aim of alerting inspection personnel to be cautious when entering such areas. May I ask, when setting up area alarms on-site, does each combustible gas alarm or toxic gas alarm come equipped with a bypass switch and a reset button?