EASY WIRE TRACING: Don't worry about the noise with the help of headphones. Simple analog tone generator and wire tracing probe for open-ended, non-active wire runs, making wire tracing hassle-free. MULTI-FUNCTION: This wire network detector can not only detect, you can also track cables or wires confirm the power failure and receive the audio signal, identify the status of the telephone line etc. ANTI-INTERFERENCE: Upgraded digital signal mit fast, no noise accumulation, fast mission, analog signal easy to send. Adjustable volume control suitable for multiple environment. ADJUSTABLE VOLUME CONTROL: Adjustable volume control allows for customized audio output, optimizing the tracing experience in different environments. Colour:As shown Material:plastic note:Please replace the battery in time, when the indicator blinks. Package Contents: 1 x mitter 1 x Remote Receiver 2 x 9V Batteries 1 pair x earphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.