Radon Air Quality Meter Detector for Home 3.3Bq to 37kBq/m³ Battery Powered Accurate Detection Easy to Use Dual Usage Modes Prompt Adjustments Place It Anywhere Two Alarm Settings Product Colour: Black + White ,Sensor Type: Semiconductor Sensor ,Measuring Range: 3.3Bq to 37kBq/m³ (0.09 to 1000pCi/L) ,Response Time: 6 hours,Item Model Number: RM-65 ,Detection Accuracy: ±15% ,Product Dimensions: Diameter 3.23 in/82 mm. Height 1.57 in/40 mm,Net Weight: 0.31 lbs/0.14 kg ,Main Material: ABS ,Data Updating Time: 1 hour