Infrared Sensors FAQ

Precautions on Using

Is a pyroelectric infrared sensor influenced by the air flow from heaters and air conditioners?

Yes, it is influenced.
When air blows on the pyroelectric infrared sensor, a sudden temperature change occurs on the surface of the sensor and the pyroelectric ceramic reacts to the temperature change, and an output may occur.
For this reason, use in a location where it is not influenced by air flow (no direct air flow).

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