Features Stable Performance: Enjoy reliable testing with strong anti-interference capabilities, perfect for telecommunication engineers and network maintenance professionals Advanced Tracking Function: Effortlessly trace lines through RJ11 and RJ45 interfaces, with adjustable sensitivity for optimal signal strength over long distances Convenient AC Voltage Detection: Quickly detect AC voltage above 48V without stripping cables, making your testing process efficient and hassle-free Comprehensive Compatibility: Seamlessly work with all types of low-current equipment, including routers and Ethernet switches, while verifying network cable order Lightweight and Portable: Compact design ensures easy handling and mobility, allowing you to conduct tests in various environments with convenience Features: 1、Stable performance, it has strong anti？interference ability, and has a variety of applicable types of cables. It is an indispensable testing tool for telecommunication engineers, wiring engineers, and network maintenance personnel. 2、Tracking function, it can track the line from RJ11, RJ45 interface, other metal conductors can be tracked through the adapter, the sensitivity is adjustable, the signal is strong and the distance is long. 3、Non？ type, it can use non？ method when performing AC voltage detection, can detect AC voltage above 48V, and does not need to strip the sheath, which is convenient and quick. 4、It can be directly searched with any type of weak current equipment such as Ethernet switches, routers, etc. It can fully detect the order of the network cables, and is equipped with low？voltage prompting and lighting functions. 5、Small in size, it is lightweight and portable, can be easily hand？held to test in various situations, to help you detect the cables you need，can be used as a good helper for you. Specification: Item Type: Line Finder Material: ABS Model: WT-58DL Transmitter Power Supply: 1x9V 6F22battery (Battery Not Included) Receiver Power Supply: 1x9V 6F22battery (Battery Not Included) Purpose: It is suitable for testing network cables and telephone lines. Model-10℃~50℃, 80% Relative Temperature (Non-Condensing, without Battery) Package List: 1 x Receiver (Battery Not Included) 1 x Transmitter (Battery Not Included) 1 x Earphone 1 x Cable 1 x Clip Line 1 x Toolbag 1 x Manual Note: Do not use this product during thunderstorms, dampness, and thunderstorms. Package List 1 x Receiver (Battery Not Included) 1 x Transmitter (Battery Not Included) 1 x Earphone 1 x Cable 1 x Clip Line 1 x Toolbag 1 x Manual