optical smoke detector

photoelectric smoke detector

A sensor used to initiate a fire alarm when smoke reduces the light received by a photoelectric cell in a device containing a light source; most effective in the early detection of fires in the smoldering stage.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
00:26Z 2600 SMOKE LAVATORY SMOKE: Optical smoke detector in toilet.
Instead optical smoke detectors were adopted as the most common solution.
Optical smoke detectors emit a beam of infrared or ultraviolet light which is either received by a separate device or reflected back.
Fortunately, optical smoke detectors are now available that can be tested by the so-called flashing-light method.
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