| 摘要 |
An energy saving system/network is used to control the power of air conditioners (AC) in hotels/motels. The system includes a master device and an array of slave devices. The master device may be installed in the hotel/motel front desk area, while the slave devices may be installed in guest rooms. The master device communicates with the slave devices via the power lines in the hotels/motels. This system/network automatically turns on the AC power when the guest is checked in and turns off the AC power when the guest is checked out.
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