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NCV Voltage Detection and POE Test: The product has a built-in voltage sensing (NCV) function, which can safely detect the presence of voltage on the cable and adjust the sensitivity by adjusting the knob. At the same time, with the POE polarity test function, only need to connect the receiver can quickly detect the voltage output and voltage line sequence of POE equipment, greatly improving electrical safety and testing efficiency. Wide Applications: It features long-distance transmission and clear sound and is widely used for testing network cables, telephone cables, and shielded cables. It can quickly, accurately, and efficiently complete network cabling, maintenance, or troubleshooting tasks. Intelligent Cable Identification and Detection: With a powerful cable tracking function, it can quickly identify the target cable by changing the sound level in a noisy environment, effectively solving the complex wiring problem. At the same time, the product has a cable pairing check function, which can visualize the physical connection status of cables through 8-line status indicators, including open circuit, short circuit, crossed connection, and so on. Energy Saving and Humanized Design: This product is eco-friendly in design and powered by a rechargeable lithium battery. It features a practical flashlight for low-light environments and an automatic shutdown for energy-saving, extending battery life. The switch port flashing function enhances line search, improving work efficiency. Multi-functional Integration and Line Positioning: This product is a wire positioning tool that integrates cable tracking, network routing, crystalhead crimping, alignment, POE voltage measurement, switch port flashing, and other functions into a single unit. It utilizes smooth data transmission technology and noiseless wire locating technology to achieve fast and accurate positioning of the required cables. Widely used in the installation and maintenance of various communication lines such as telephone, computers, and video networks.