I can't say enough about this product. Sorry I'm limited to 5 stars. * * * * * I'll add 5 more here It worked right after setting the co/cpe switches. I've tried running the security cameras within 600 feet of the dash cam to no avail. I've tried "balun" connectors but got images that are wobbly. I placed the "co" block behind the router and used the existing Cat5 cable, although I think it will work with just about any copper pair. 600 feet down the line I put the "cpe" block on and connected it to the dash cam. Instant success! There's so much you can do with it. You can add a bridge to expand your network or a router to create a new, separate network. I wish I would have stumbled across this last year before wasting my time and money. It's a little pricey but worth it and cheaper than others on the market. I can go on forever, I'm so happy with it.
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