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FS-IR32 series
Working principle:
The photoelectric liquid level sensor has a built-in infrared emission tube and a photosensitive receiver, and the detection part is a prism structure. When there is no water, the light emitted by the transmitting tube will be refracted to the receiving tube after passing through the lens; when there is water, the light will be refracted into the liquid, so that the receiver cannot receive or can only receive a small amount of light.
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