X-Sense XR0A-iR Wi-Fi Radon Detector for $80 + free shipping

This X-Sense radon detector is $20 off the regular price of $99.99. It tracks radon levels continuously for up to 999 days, giving a longer-term view than a simple one-time reading, and it syncs with an app over Wi-Fi so levels can be checked remotely. Buy Now at Amazon Features Connects to 2.4 GHz Wi-Fi for app monitoring and notifications Stores up to 999 days of continuous radon monitoring history LCD screen displays current radon levels and trend arrows Runs on 3 AA batteries with up to 2 years of battery life Tracks temperature and humidity trends alongside radon readings Measures 3.1" x 3.2" x 2.8" and weighs 1.08 lb.