
I bought one of the Klein Tools VDV501-809 VDV Scout Pro Tester Kits for work a year ago. I use it every day and it works great. I'm a telecoms specialist and the additional 19 piece set is a must have. I think the 5 that come with the device will be enough for many, but you never know when you might need more. They are essential as they will save you more time than you can imagine. You can also get a set of 19 category 5 items. I also noticed that the number of the toner you put on the line is number 5 for example and your counter shows 11. You can be sure that the cable itself is bad. This may work for some applications such as cable TV or CCTV settings, but may result in poor picture quality. With this kit it is very easy to tone several coaxial lines at once.

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