| 摘要 |
A wireless system includes a headless base station having a first wireless communication port, a fob having a user input device, a display and a second wireless communication port structured to communicate with the first wireless communication port of the base station, and various wireless nodes different than the fob. The wireless nodes include a sensor node, a device node and a range extender node. The wireless nodes have a third wireless communication port structured to send information to or receive information from the first wireless communication port of the base station. The fob is structured to respond to the user input device and determine if the fob is in range or out of range of wireless communication with the base station.
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