Airthings 2950, Wave Radon DetectorCondition:* New Surplus Stock, In OEM Bulk Packaging. As Pictured.Additional Notes:* Radon Sampling: Passive Diffusion Chamber* Detection Method: Alpha Spectrometry* Operational Environment: 39F To 104F / 4C To 40C* Relative Humidity: <85%* Measurement Range: 0 - 500 pCi/L / 0 20,000 Bq/m3* Dimension: 4.7" x 1.4" / 120 x 36mm* Air Quality: Radon, Temperature, Humidity* Motion Sensor: Wave * Visual Alerts: Green, Yellow, Red * Free Mobile App: iOs& Android * Long Battery-Life: ~ 1.5 Years* Notifications: In App and EmailAirthings 2950