Cheap And Discounts Digital Ultrasonic Water Flowmeter Wall Mounted Clamp On TM-1 Transducer DN50mm-700 TUF-2000B RS485 interface IP67 protection Wholesale. Buy Directly From Merchant AERMANDA Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.