Features 1、High sensitivity, wide measuring range, has a long service life. 2、Can be applied to material inspection, environmental test, radiology protection, radiopharmaceutical screening, etc. 3、Compact and portable, the operation interface is simple and clear, easy to use. 4、The daily use of nuclear radiation detector helps to avoid radiation hazards in daily life. 5、This Geiger counter radiation detector almost instantly detects Beta, Gamma, and X‑rays to provide you with the most accurate knowledge at fast speeds. 6、Using of sophisticated G-M tube as the core sensor. Specification Condition: 100% Brand New Item Type: Nuclear Radiation Detector Material: ABS Size: Approx.135x70x40mm / 5.3x2.8x1.6in Weight: Approx.163g/5.7oz 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 The Maximum Dose Equivalent Rate: 99.99μV/h Ambient Temperature: -25 ~+45℃ Relative Humidity: ≤95%（+45℃） Power Supply: 2 x AA battery (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