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 offers high accuracy, providing safe and reliable testing of telephone and local area network cables, making it an essential tool for electricians and professionals. Easily identify the wire pair: Utilizes SmartTone technology to identify correct wires. When the remote end of the short-circuit cable is paired, the tone rhythm changes, allowing for easy and accurate wire identification. Intelligent function for precise pairing: Use the SmartTone function of the Pro3000 analog audio generator to accurately identify and pair wires. This intelligent feature simplifies the cable fault detection process. Multiple tones for easy identification: With SmartTone technology, hear 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 shown in the image and the actual item. Measurement may vary by +/- 1-3 cm.