| 摘要 |
A signal transmitting apparatus in accordance with the present invention comprises two connecting wires. Two connectors are respectively to two opposite ends of each of the two connecting wires. Two alarm devices are mounted on the two connecting wires and each near a corresponding one of the two connectors. Two conducting wires are respectively connected to the two alarm devices to form a closed circuit such that the two alarm devices are synchronously operated when one of the two alarm devices is connected to a power source for user to confirm a connecting wire is operated in somewhere.
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