Smart IC card water meter, one meter, one card IC card water meter is a metering tool for household charging and management and control. It fully realizes the prepaid charging mode and the stepped water price charging mode. The water fee is directly divided into several levels, and the advanced charging is carried out layer by layer, which effectively achieves the purpose of water saving, controls the specific amount of water used by people, and avoids waste of resources. The product uses magnetoresistive sensing technology, and the protection level reaches ip68. The use of new organic antifreeze glass is a wise choice for many water meter renovation projects, new rural construction, urban-rural integration, agricultural drinking water, and residential property management.