This is a kind of fine quality nuclear radiation detector, which can help detect , , X rays. High detection sensitivity, especially for environmental radioactivity monitoring to detect traces of nuclear radiation. Interference resistance ability, capable of reliable operation in complex electromagnetic environments. Widely used, can be used in the home environment, daily necessities, mineral rocks, decorated stone and other radioactive detection, can also be used for industrial or radioactive leakage detection of imaging equipment. You can have a try. Specifications: Name: Geiger Counter Material: ABS Color: black, white (optional) Battery: 3 * 1.5V dry batteries or 3 * 1.2V rechargeable batteries (not included) Detection technology: G-M detection technology Detection type: #xff0c; #xff0c;and X rays Display mode: LCD screen #43; backlight Energy range: 20kev-3.2mev 30%(137Cs-) Sensitivity: 80cpm/Sv/(Co-60) Test accuracy: 0.01Sv/h Real-time range: 0-99.99Sv/h Accumulation range: 0-99.999mSv/h Real-time error: 10% Mean error: 3% Item size: 106 * 70 * 30mm / 4.17 * 2.76 * 1.18in Item weight: 120g / 4.23ounce Package size: 150 * 100 * 50mm / 5.91 * 3.94 * 1.97in Package weight: 150g / 5.29ounce Packing List: 1 * Geiger Counter