1. Features: - High sensitivity, wide measuring range and long service life. - Using precision G-M tube as the core sensor. - Can be applied to material inspection, environmental testing, radiological protection, radiopharmaceutical screening, etc. 2. Material: ABS 3. Detectable species: Beta, Gamma, X-ray 4. Sensor type: G-M tube 5. Energy range: 50kev-1.5mev is less than 30% 6. Relative inherent error: less than or less than 10% 7. Sensitivity: 80cpm / μSV / Co-60 8. Maximum dose equivalent rate: 99.99μsv / h 9. Voice source: real particle sound / alarm sound / mute 10. Alarm threshold: 0.5 / 1.0 / 2.0 / 5.0 11. Use ambient temperature: -25 ~ + 45 degrees Celsius 12. Relative humidity: less than 95% 13. Power supply: Lithium battery charging (with battery)