Enhanced durability: This cable tester is made of high-quality materials, designed for long-term use with excellent wear resistance, ensuring durability and reliability. Accurate and reliable test: This cable tester provides highly accurate results, enabling safe and reliable testing of telephone and local area network cables, making it a valuable tool for electricians and professionals. Easily identify the wire pair: Utilizes tone detection technology to identify correct wires. When the remote end of the cable is short-circuited, the tone changes rhythm, allowing for easy and accurate identification of wire connections. Intelligent function for precise pairing: Use the tone generation function of the Pro3000 analog audio generator to accurately identify and pair wires. This feature simplifies the process of locating and diagnosing cable faults. Tone-based identification: With tone detection technology, hear up to 5 different tones through probes. Quickly identify and match specific wire pairs, saving time and effort during cable testing. Color: As shown Material: Plastic Package Contents: 1 set x Circuit Finder Note: The package includes only the items listed above; other products are not included. Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3 cm.