Operation Method: a: Turn the knob of the transmitter to the line finding function position b: Connect one end of the cable to be tested to the corresponding port of the transmitter (such as RJ45, R) or connect it to the R11 end through an adapter c: The SCAN indicator light illuminates to indicate that the transmitter has started sending an audio signal to the cable to be tested. d. Turn on the power supply of the receiver, hold the receiver in hand and hold down the "SCAN" button of the receiver. Detect the other end of the cable to be tested (such as around the junction box of the telephone wiring cabinet, hub, switch, etc.) by comparing the size of the sound emitted by the receiver. The cable with the highest sound when approaching the probe is the one to be found. During the detection process, the volume can be adjusted by adjusting the volume adjustment knob on the receiver, To adapt to the actual environment.