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Website:https://www.eptsensor.com/level-sensor/non-contact-level-switch/side-mount-water-level-switch.html
The working principle of Side Mount Water Level Switch A1MF-A-PC-PH2.0 is direct and simple. When the detected level is in air, due to reflect of the prism, most of light will enter receiver LED, optical level sensor will output high voltage.

When the detected level is in water, due to refraction of the liquid, just less of light enter receiver LED, optical level sensor will output low voltage.

Optical level sensor is widely used in level control and alarm of all kinds of industry such as electronic, electric power, chemical, watertreatment, water supply due to its low price, reliable performance and flexible installation method.

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Production by customers' drawings or samples.