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The Black Box Net Tone is an essential tool for any professional working in telecommunications or networking. This handheld device features a tone generator and a probe that allows you to trace and locate cable ends quickly and accurately. It works on both RJ-11 and RJ-45 jacks, making it versatile enough to handle various types of cable testing needs. With its OLED display and easy-to-read tone output, the Net Tone ensures precise connections every time. The alligator clips allow you to connect to any wire pair easily, making it ideal for twisted pair cable testing. Whether you're installing new cables or troubleshooting existing ones, the Black Box Net Tone is a must-have tool for anyone who wants to streamline their telco or network projects.