Product features: 1. Applicable to RJ45 network cable interface, RJ11 interface dual-core telephone line can be transferred through the alligator clip line 2. Network cable proofreading function to test the through and through 3. Positive and negative detection DC level test: the function selection dial to "line seeking" and long press the "switch" button for more than 2 seconds "line sequence light" flashing, the alligator clips into the RJ11 socket, respectively, clip the two ends of the power supply 4. With a headphone line for clear listening: the product comes with a headphone line, in a noisy environment, you can wear a headphone line for operation, the volume can be adjusted through the knob 5. The product comes with a flashlight function in the dark or in the case of insufficient light can be convenient lighting work Product parameters: Product name: Multifunctional network line finder Product Model:M469A Interface: RJ11/RJ45 Material: ABS Use battery:6F22 9V battery (shipped without battery) Weight:Transmitter 62g Receiver 77g Telephone line seeking function: Network line seeking function: Network line proofreading function: Power cable line line finding: Open circuit and short circuit test: DC level test function: Low voltage prompt: Illumination light: Volume adjustable: Auto shutdown:After about 1 hour of power on, the wire finder will automatically enter into shutdown state Headphone function: In noisy environment, you can plug in the headphone for operation to avoid outside interference Package and list: Receiver *1 Transmitter * 1 Alligator clip *1 Headset *1 RJ11 adapter cable *1 RJ45 adapter cable*1 Instruction manual*1 Storage bag*1