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1/2'' Water Flow Sensor 1 30L/min Hall Flowmeter Temperature Sensor for Arduino Turbine Flowmeter Measure Temperature Instrument|Flow Sensors| - AliExpress
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DN15 G12 Water Flow Sensor, Keenso 12'' Water Flow Sensor Control Hall Effect Flowmeter 130Lmin High Precision Sensor Switch for Arduino New: Amazon.com: Industrial & Scientific
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