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Review title: Problem
Product review: I am now into on my fourth P3. All the good comments made are accurate. It does what it is supposed to. But after a while, the voltage becomes inaccurate, it reads higher than it actually is. I cannot tell if the other readings are still accurate as I have no way of checking these. I have had to return two units to the dealer and the same thing is happening to another one I now have in use.
