| 摘要 |
A vacuum cleaning system for use in a structure. System has receiver adapted to receive communication that an appliance has been activated, and a control circuit adapted to control the central vacuum cleaning system upon receipt of a communication at the receiv er that the appliance has been activated. Example appliances include doorbell, telephone or ERV. System may have a communication module that communicates with corresponding applian ce communication module. The system communication module may transmit communications to the appliance communication module. Alternatively, the appliance communicati on module may transmit communications to the system communications module. The modules may both receive and transmit. Preferably, communications between modules are radio frequency (RF) wireless, however wired communications, where wiring is possible or available, are als o suitable.
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