1. The Name: RF Card Smart Water Meters This prepaid water meter is a new type of measuring instrument that uses a new type of microprocessor to realize water volume collection, processing, display and storage. 2. Performance Characteristics Dry core: central magnetic drive, anti-magnetic interference, good stability, strong anti-freezing ability, and permanent clear reading. Prepaid function, pay first, use later. Support tiered water prices, one card with multiple meters. Anti-magnetic interference function, low power consumption, long use time. The enclosure protection grade is IP68. Optional materials: ductile iron, engineering plastics, copper, stainless steel. Environmental level: Class B electromagnetic environment: E1 Temperature class: T30, T90 Accuracy Class: Class II Pressure level: MAP10 Pressure loss grade: δ P63, δ P25 Sensitivity level of upstream flow field: U5,U10,U0 Sensitivity level of dow…