Description Report Item Instrument features: 1. It can monitor X, y and β radial 2. The instrument has high sensitivity and can also measure environmental background rays 3. Chinese-English bilingual operation interface, simple operation and convenient use 4. Simultaneous measurement and display of dose rate and cumulative dose 5. LCD screen display 6. Support battery power display 7. The instrument can preset dose rate and cumulative dose alarm threshold 8. Support time and date setting 9. Support alarm switch setting Main technical indicators: 1. Detection ray: y, X and β radial 2. Detector: energy compensation CM tube (Geiger counter tube), low energy response is improved 3. Normal content standard is within 0.5 µ Sv/h 4. Measurement range A. Dose equivalent rate: 0.01~1000 µ Sv/h (maximum 10mSv/h) B. Cumulative dose equivalent: 0.01 µ Sv/h~500.0 mSv 5. Energy response: 50KeV~1.5MeV ≤ ± 30% (for 137CS -) 6. Sensitivity: 80CPM/µ Sv/h (for Co-60) 7. Alarm threshold: A. Dose rate: optional at 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0 µ Sv/h B. Cumulative dose: can be selected from 0.05, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, and 100.0 mSv/h 8.Measurement display: dose rate is displayed every second, and protection alarm response is less than 5 seconds 9. Operating environment: temperature - 10 ℃~+45 ℃, relative humidity: ≤ 95% (+45 ℃)