Corentium Home 2, the world's most trusted digital radon detector, now even smarter Airthings revolutionized home radon detection in 2011 with Corentium Home. Corentium Home 2 builds on that legacy of trusted long-term monitoring with smart app connectivity, a restyled device display, and additional sensors measuring temperature and humidity. Tap into the app's interactive graphs to easily track trends, and get sensible advice based on your home's radon level, helping you confidently manage the risk radon may pose and ensure a healthier home. THE SMART CHOICE: Simple, accurate and smart indoor radon monitor. Know your home's radon level and understand if you need to take action. Continuous monitoring for long-term peace of mind. FREE APP: The Airthings app takes you beyond the numbers with interactive graphs and proactive, sensible advice to help you understand and respond to your radon level. BONUS SENSORS: Measure the temperature and humidity levels where you're testing for radon. View real-time readings on the device display and access detailed historical trends in the app. NO LAB FEES: You're in complete control with your own radon monitor. No shipping pots to labs, paying fees or waiting weeks for results. Just check your device display or open the app. PORTABLE & VERSATILE: Use it to detect & measure radon levels in different rooms in your home. It's cable-free and runs for up to two years on AA batteries. Use it with or without the app. TRUSTED BY RADON PROFESSIONALS: Corentium Home 2 uses the same sensor technology used, trusted, and recommended by thousands of radon professionals across the USA.