There is a certain amount of radiation in the natural environment we live in, and real-time data will fluctuate within a certain range. Daily use of nuclear radiation detectors can help avoid radiation risks in daily life. Features: high sensitivity, wide measurement range, and long service life. Precision GM tube is used as the basic sensor. It can be applied to material inspection, environmental testing, radiation protection, radioactive drug screening, etc. It is compact and portable, with a simple and clear operation interface and easy to use. Specifications: Material: ABS Color: White, Black (optional) Detectable Type: , Gamma, plus or minus 10% Sensitivity: 80cpm/SV/Co-60 Maximum Dose Equivalent Rate: 99.99SV/h Sound Source: Real Particle Sound/Alarm Sound/Silent Weapon Threshold: 0.5 (not adjustable) Ambient Temperature: -25~++45 Relative Amplitude: Less than 95% Power Supply: 2 * AA Batteries (not included) or USB Cable (not included) Product Size: 135 * 70 * 38 mm / 5.3 * 2.8 * 1.5 inches Unit Weight: 145 g / 5.1 oz Packing Size: 150 * 80 * 50 mm / 5.9 * 3.1 * 2.0 inches Packing Weight: 160 g / 5.6 oz Packing List: 1 * Nuclear Radiation Detector 1 * English manual