| 摘要 |
Device for identifying multiple two-conductor alarm wires originating from a common location but terminating at individual remote locations. This device is utilized at the common location by connecting a plurality of test leads and common leads to wires to be identified. User then visits the remote locations where alarm wires connected to test leads and common leads are suspected to terminate. Device emits frequency pulses along connected wires. Using an inductance amplifier probe user can locate and verify that the wire at the remote location is indeed connected to the device. If necessary the user can find the wire it buried within the wall and when found, strip back insulation of the same terminating end of alarm wire and momentarily join the two conductors together. The result is a number of audible beeps sounding from a piezoelectric transducer from the device letting user, who is at the remote location, know which test lead is connected to the wires that were momentarily joined together. In addition to the audible beeps produced by a piezoelectric transducer the invention imposes frequency pulses along all connected wiring corresponding to the number of beeps emitted by the piezoelectric transducer so that a user could count the pulses using an inductance amplifier probe at very distant locations whereby the use of an audible buzzer would not prove usefull.
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