An optical smoke alarm or detector in close up-9992
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![](https://stockarch.com/files/imagecache/Preview/20/04/smoke_detector_optical.jpg)
Image Description:
An optical smoke alarm or detector in close up viewed from above which uses a light scatter principle to detect smoke particles in the air
Keywords:
alarm, close up, optical, smoke, detector, air, light, particle, scatter, household, insurance, safety, fire, photoelectric, pulse License:
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