| 摘要 |
The device (1) has an electronic billing unit for measuring the amount of water consumption. The supply of water from a water tank (8) to a tap (3), is controlled by a control panel. The electronic billing unit is provided with two types of storage medium for storing and transferring calculated water billing data between each other, according to the charging necessity of one of the storage media. A central accounting unit is arranged in a closed housing, for simultaneously receiving and processing the data from the storage media. |
