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© 2003 SHENZHEN DONGJIABAO TECHNOLOGY CO.,LTD
E-mail：dongbao@szdongbao.com |
 and an phototransistor
are diagonally arranged into this device.
It detects the reflected light of dust in air.
Especially, it is effective to detect very fine particle
like the cigarette smoke.
In addition it can distinguish smoke from house dust
by pulse pattern of output voltage.
Applications.Example: Air purifier, Air conditioner, Air monitor){kind=link}
