Description SUITABLE FOR- This tool set can be used for all kinds of cable line installation, inspection and maintenance, and can assess the work of the telephone line in different states. This will prevent cable insulation from being damaged. CONVENIENT- Establish continuity of cable or wires. Trace cables or wires and diagnose breakpoint. MULTIFUNCTION - Receive tone signal on cables or wires (telephone line). Identify working telephone line status (clearing, ringing, busy). Send single sliding tone or double tone on object cables or wires. HUMANIZED DESIGN- Large rear speakers, loud sound, can also be heard in a noisy environment. Intelligence button and indicator light. 3000m effective detection distance. EASY TO USE- Not only rich in functions, this cable finder is also very easy to use, and it will be a good helper for you. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it