| 摘要 |
A meter reading system (10) for reading meter status information from meters (150) includes a meter reading device (15) for transmitting messages at a first data rate, i.e., a higher data rate, and at a second data rate, i.e., a lower data rate. Externally powered meter interface units (14) receive at least the messages transmitted at the higher data rate, and battery powered meter interface units (12) only receive the messages transmitted at the lower data rate.
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