Features Professional Geiger counter with latest integrated sensor. It has the advantages of high sensitivity, wide measurement range and long service life. Can be applied to material inspection, environmental testing, radiological protection, radiopharmaceutical screening, etc. Compact and portable, the operation interface is simple and clear, easy to use. The daily use of a nuclear radiation detector helps to avoid the risk of radiation in everyday life. This Geiger radiation detector detects beta, gamma and X-rays almost instantly to provide you with the most accurate knowledge at fast speeds. Specification: Condition: 100% brand new Item type: Nuclear radiation detector. Material: ABS Color: white, black (optional) Size: approx. 135 x 70 x 40 mm/5.3 x 2.8 x 1.6 inches. Weight: about 163 g/5.7 oz Detectable types: β, γ, X-ray Sensor type: G-M tube Energy range: 20kev~3.0mevs ≤±30%(137Cs-) Relative intrinsic error: ±10% Sensitivity: 80cpm/μSV/Co-60 Maximum dose equivalent rate: 99.99 μV/h Ambient temperature: -25~+45℃ Relative humidity: ≤95%(+45°C) Power supply: 2 x AA batteries (not included) or USB cable (not included) Voice source: real particle sound/alarm sound/mute Alarm threshold: 0.5/1.0/2.0/5.0 Power consumption: 0.15W Package List: 1 x Nuclear Radiation Detector 1 x Instruction Manual Note: 1. Please allow 1-2 cm error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated the same, the colour of the item shown in the photos may be slightly different from the actual item. Please take the real one as standard.3. Please note that the new type and old type of this product will be sent at random, and make sure you do not mind before ordering. Package List 1 x Nuclear Radiation Detector 1 x Instruction Manual