radon detector 2

https://radontestcostsource.juniperbrief.com/posts/understanding-radon-test-cost-what-homeowners-should-expect

A radon detector sits quietly in your basement, silently watching for the invisible radioactive gas that seeps from the soil. It's a small white box that clicks and glows, giving you peace of mind by alerting you when levels get too high, so you can ventilate or fix your foundation before it becomes a health risk.