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 testing: This cable tester provides high accuracy, enabling safe and dependable testing of telephone and local area network cables, making it a valuable tool for electricians and professionals. Easily identify wire pairs: Utilizes tone detection technology to identify correct wires. When the remote end of a short-circuit cable is paired, the tone pattern changes, allowing for easy and accurate identification of wire connections. Intelligent pairing function: 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. Distinct tones for easy 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 Only the above package content; other items are not included. Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.