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 highly accurate performance, enabling safe and dependable testing of telephone and local area network cables, making it an essential tool for electricians and professionals. Easily identify wire pairs: Utilizes SmartTone technology to detect correct wiring. When the remote end of a short-circuit cable is paired, the tone rhythm changes, allowing for easy and accurate identification of wire connections. Intelligent function for precise pairing: Use the SmartTone feature with the Pro3000 analog audio generator to accurately identify and pair wires. This intelligent function simplifies the cable fault detection process. Tone-based identification: With SmartTone 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: 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.