Product Name: Nuclear Radiation Detector Sensor: Geiger tube Detection rays: γ, β, X Counting detection: 90mm Geiger counting tube Measuring range: 0.08usv/h~9999μSV/H. Working environment: -10~50°C; Humidity ≤95%RH non-condensing Charging method: USB - type - C Product size: 100x40x25mm Screen size: 0.96 inch TFT color screen