X-Sense XR0B-SR Radon Detector for $51 w/ Prime + free shipping

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Testing your home for radon is something the EPA recommends regardless of your region, and this plug-in monitor gives continuous readings instead of a one-time test. At $51.29, that's $33.70 (40%) off the $84.99 list price for Prime members. Deal ends October 7.  Buy Now at Amazon Features 999-day radon tracking with 24-hour results 2-year battery life for maintenance-free monitoring Real-time sound and light radon threshold alerts Local storage for 99 historical records Integrated temperature