Only used once or twice. The Elegiant Multifunction Wire Tester is a versatile tool designed for testing and troubleshooting computer and phone cables. This wire tracker and emitter unit is capable of detecting faults in RJ11 and RJ45 cables, making it ideal for professionals and home use. The Elegiant brand ensures quality and reliability, and the compact design makes it easy to use on the go. Perfect for ensuring smooth connectivity and functionality in computer and phone networks. Includes cable, case and manual.