Why does my photoelectric smoke detector go off for no reason?

On August 3, 2024, in Florence, customers were leisurely shopping in a shopping mall, Suddenly, the sharp alarm of the photoelectric smoke detector sounded and alarmed, which was causing a panic. However, after careful inspection by the staff, they did not find any signs of smoke production. Similar cases also have been reported at a school in Vietnam and a factory in India.
Experts, after thorough analysis, points out that the causes of this are complicated. On the one hand, environmental factors may be to blame first. For example, in some poorly ventilated areas, dust is easy to accumulate, which may interfere with the normal operation of the smoke detector, which makes it misjudge the dust as smoke. On the other hand, electromagnetic interference cannot be ignored. Electromagnetic waves, such as those generated by nearby large electrical equipment, communication base stations, etc., may affect the detector's electronic components, causing it to issue false alarms. In addition, the probe's own fault is also an important reason. For example, the aging or damage of the photosensitive elements inside the detector may cause its perception of light to be biased, which will result in false positives. In addition, some non-standard installation methods, such as the detector installation location is too close to the air conditioning outlet or wet area, will also affect its normal performance.
In order to effectively solve the problem, fire departments and relevant enterprises are actively taking measures. On the one hand, strengthen the quality supervision of the detector production and installation links to ensure that it meets strict standards and norms. On the other hand, increase the training of the use of units, so that they can correctly maintain and manage the detector, timely detection and elimination of potential faults. And the good news is that Shenzhen Ariza Electronics Co., Ltd. provides reliable smoke alarm.The alarm adopts a photoelectric sensor with a special structure design and a reliable MCU, which can effectively detect the smoke generated in the initial smoldering stage or after the fire.

Believe that through the joint efforts of all parties concerned, photoelectric sensor smoke detector as a cause of the problem will be settled, to provide more reliable guarantee for people's life and property security.