IC water meters have some basic card functions for management.
One card function per household. Set the user password and other passwords of the user table, through one card, realize the only user-specific card used by a water user, and the card is inserted. Security.
Card replacement function. The user card may be lost. In this case, it can be replaced. There are two possibilities: one is to lose the amount in the card, and the other is to lose the amount in the card. The card exchange is performed through the management software.
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