Optical-based smoke alarms use light instead. They are slightly better at detecting the large smoke particles created by slow, smouldering fires. When such particles enter a chamber in the device, they scatter light from a small light source, which is then picked up by a photoelectric sensor.
2026-02-28 00:00:00:0陈 晔3014274510http://paper.people.com.cn/rmrb/pc/content/202602/28/content_30142745.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/28/content_30142745.html11921 做宫灯的人
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