Negative Positive
Title: Worth getting
Review: We have the version II of this and found it to be accurate and useful. We confirmed the results of this device with a professional tester and also a series of 3 day and 3 month charcoal tests....every single testing method we used matched the digital readings on the Safety Siren II. Cant speak to the III version, but they at least look similar in appearance. Given the substantial risk of radon, this is for sure worth the money. I still do charcoal/carbon tests every few years to verify as well.
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