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Polarity reverser for desk phones
If your touchtone phone suddenly stopped working one day, this is probably what you need!
Here is why: early touchtone dial pads are "polarity sensitive." This means that the current has to flow in the proper direction through it for it to work. This is a quick fix for your phone: just put this device in line with your phone and it will correct polarity for you.
Satisfaction is, of course, guaranteed. FREE SHIPPING in USA!
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