| 摘要 |
A system having first and second different communication system can include a plurality of illumination devices having modulatable optical output signals. A plurality of building control units are in wireless communications with one another. Representative units could include ambient condition detectors, intrusion detectors, output devices or actuators. At least some of the units include optical sensors responsive to the modulatable optical output signals, and, wherein in responsive to received, modulated optical output signals, the respective control unit carries out a predetermined function. |
