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