1. The user IC card is used and meter works after the prepayment
2. One card for one or multiple meter
3. Two alarm grade to remind purchasing water
4. It has the functions of failure checkup.
5. Two billing mode
6. Single water price prepaid mode:
The usage quantity is billed bases on single water price and the
billing system set the price rate according to the water consumption
situation.
Ladder water price prepaid mode:
The monthly water consumption quantity is set as multiple ladders by
billing system and each ladder has its price. When firstly purchasing
the water, the vending system will bill the water according to the
preset value, and then secondly purchasing, the system will bill the
water bases on your actual water consumption situation of last time.
The formula is:
total
price = first ladder price x first ladder water consumption quantity +
second ladder price * second ladder consumption quantity + … and so on.