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, 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 function for precise pairing: Use the SmartTone function with compatible analog audio generators to accurately identify and pair wires, simplifying the cable troubleshooting process. Clear tone for easy identification: With SmartTone technology, hear up to 5 different tones through probes, enabling quick and accurate matching of required 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 display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.