waterproof ultrasonic level sensor for liquid and solid

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$16.00 /Sets
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(20 available)
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Shenzhen EPT Tech co., LTD
7/F Bldg 12, Baoneng Technology Park,Qingli Road,Longhua District,Shenzhen,China
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The ultrasonic level sensor’s working principle
Ultrasonic level sensors use the Time-of-Flight measuring principle to measure level. The device sends sound waves at a frequency higher than humans can hear, from 20 kilohertz to one gigahertz.
These waves bounce from the surface of the product, creating an echo that goes back to the sensor. Then, the sensor calculates the time the echo took to return to find out the level. It works in both: fluids and solids. 

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