Negative Positive
Title: Not accurate. Don't waste your money.
Review: I purchased this after I bought a house where the radon level on my inspection was 3.9. I wanted to see where we were for a while before calling in a company for remediation. This device showed a reading of over 4 for about 2 months, so I called a reputable radon company to do a final test ($50) before fixing the issue. Reading from the radon company was 1.7, while this device read 4.4.
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