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G1" Water Flow Sensor, Male Thread Brass Hall Effect Sensor Flow Meter 2~50L/MIN, DC 24V Powered Flowmeter Counter for Arduino, for Raspberry Pi for Reverse Osmosis: Amazon.com: Industrial & Scientific
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DIGITEN G1/2" Water Flow Sensor, Food-Grade Hall Effect Sensor Flow Meter Flowmeter Counter 1-30L/min - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible: Amazon.com: Industrial & Scientific
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G1/2 Plastic Water Flow Sensor Meter Turbine Hall Flowmeter Easy To Measure Water / Flow Rate With Xh-3p Connector For Arduino - Industrial Computer & Accessories - AliExpress
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