Features: The natural environment we live in has a certain amount of radiation, and the real-time data will fluctuate within a certain range. Daily use of nuclear radiation detectors can help avoid radiation hazards in daily life. High sensitivity, wide measuring range and long service life. It can be used in material inspection, environmental test, radiation protection, radiopharmological screening and so on. Compact and light, the operation interface is simple and clear, easy to use. Specification: 100 percent brand new with high quality Detection rays: X, y and hard beta rays Detector: Energy compensated GM tube (Geiger counter tube), low energy response is improved Normal content standard: within 0.5Sv or h. Measuring range Dose equivalent rate: 0.01100Sv or h Alarm threshold: can be arbitrarily selected in increments of 0.05Sv or h within 100.0Sv or h. Measurement display: the dose rate is displayed every second, and the protection alarm response is less than 5 seconds. Use environment: temperature -10Cand45C Relative humidity: 95 percent (and45C) Size: 135x70x 24mm or 5.31x2.76x0.94 inch Package Included: 1 x radiation detector (Battery is not included) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.