This NetAlly LinkRunner AT 2000 Network Auto Tester (LRAT-2000) is a reliable and efficient tool for testing RJ11 cables. With its compact design and convenient carry bag, it's a perfect solution for business and industrial applications. The tester is easy to use and provides accurate results every time. The brand NetAlly is known for producing high-quality testing equipment, and this model is no exception. The AT 2000 is a versatile tool that can be used to test multiple cable types and is an essential part of any tester's toolkit. Whether you're a professional or just need a reliable tester for your home network, the NetAlly LinkRunner AT 2000 is a great choice.