| 摘要 |
A signaling device that receives coded signals from a transmitter. The signaling device includes a first circuit that receives a from the transmitter. The first code includes a first identification code and a first variable code. The signaling device further includes a memory that stores a second code. The second code includes a second identification code and a second variable code. The signaling device further includes a second circuit coupled to the first circuit and the memory. The second circuit generates an output signal if the first code matches the second code. The signaling device further includes an annunciator circuit coupled to the second circuit. The annunciator circuit provides a perceivable indicator if the second circuit generates the output signal. |
