Review on 🏠 SafetySiren Pro4 Series: The Trusted Leader in Home Radon Detection Since 1993 - USA Version pCi/L by John Kachinosky

Product arrived as promised; The manufacturer used UPS instead of USPS. Easy to use; You plug it in and it works automatically. No further settings are required. It still takes 48 hours for the first radon measurement, as prescribed (actually, the first measurement took about 60 hours, but it doesn't matter; be patient). I was happy to see that our home radon levels are low (less than 2) even though we have a whole house ventilation system that replaces the air in the house every few days. I turned off the ventilation system at home and will update this when I have new readings to share.