Cheap And Discounts Aquarium Inline Type Paddle Wheel Turbine Flowmeter Hall Effect Magnetic Switch Sensor Pulse/4-20mA/RS485 UPVC For Fluid Water Wholesale. Buy Directly From Merchant Shop1103850945 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.