Enhanced durability: This cable tester is made of high-quality materials, which can withstand long-term use and wear resistance to durability and reliability. Accurate and reliable test: This cable tester is highly accurate, ensuring the safe and reliable testing of telephone and local area network cables, making it an important tool for electricians. Easily identify the wire pair: Use SmartTone technology to identify the correct wires. When the remote end of the short-circuit cable is paired, the rhythm generated will change, so that the wire connection can be easily and accurately identified. Intelligent function of accurate pairing: Use the SmartTone function of the Pro3000 analog audio generator to accurately identify and pair the wire. Use this intelligent function to simplify the cable fault process. Unique tone, easy to identify: With the help of SmartTone technology, you can hear 5 different tones through probes. Easily identify and match the exact wire pairs required, save time and energy during the cable test. Color: As Shown Material: Plastic Package Contents: 1 set x Circuit Finder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.