Reliable Use: This portable radon detector provides accurate long term monitoring to help you assess environmental risks with reliable data over time, making it convenient to manage health. Excellent Construction: Equipped with an advanced ion technology sensor, this radon tester measures radon levels from 0 to 270pCi/L. It offers both quick readings within 48 hours and long term monitoring for 7+ days to determine average concentration. Portable Design: Powered by 2 AA batteries(batteries not included), this compact device is ideal for kitchens, bedrooms, basements, offices, or schools. Its lightweight design ensures easy placement anywhere for continuous air quality tracking. LCD Display: The radon meter features a clear graphical interface displaying real time readings in pCi/L or Bq/m³. The screen shows thresholds and historical data, simplifying operation and interpretation of results. Accurate Reading: Stores long term historical data for precise analysis. Extended testing (7 to 30 days) improves accuracy, with deviations below 20% for short term and 10% for long term measurements., Manufacturer: Jelquix