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 results, ensuring safe and reliable 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 identify correct wires. When the remote end of the short-circuit cable is paired, the tone changes rhythm, allowing for easy and accurate wire identification. Intelligent pairing function: Use the SmartTone function of the Pro3000 analog o generator to accurately identify and pair wires. This intelligent feature simplifies the cable troubleshooting process. Tone-based identification: With SmartTone technology, hear 5 different tones through probes. Easily 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 different displays may cause slight variations in the color of the item in the picture compared to the actual product. Measurement may vary by +/- 1-3 cm.