Free Shipping EcoBlu is a simple plug-and-play digital radon monitor that provides real-time short and long-term radon results. Easy to read large LED display with an integrated configurable alarm. Comes in white or blue. EcoBlu provides the first radon result in minutes, not days. It displays radon fluctuations and gives daily, weekly, monthly, and yearly average readings. EcoBlu integrates the latest patented radon sensor technology. It delivers an easy-to-use, fast, highly accurate, compact, and affordable solution for continuous radon monitoring. Plugin unit, no batteries required