Mini Geiger Counter Pen-Type Nuclear Radiation Detector X-ray Beta Gamma Detector Geiger Counter Dosimeter Sound Light Alarm Description: This nuclear radiation detector has the pen type design for you to carry it easily, you can even put it into your pocket to carry. There are three detecting modes: instantaneous dose, average dose and cumulative dose to meet your different needs. Features: & 9679;Portable Size: This nuclear radiation detector has the pen type design for you to carry it easily, you can even put it into your pocket to carry. & 9679;Easy to Operate: One button open and measuring, you can get the results quickly and easily. & 9679;Adopting OLED display screen to display the instantaneous dose, average dose and cumulative dose for you. & 9679;If the detected data exceeds the preset value, it has the sound and light two alarm ways to alarm you. & 9679;Built-in lithium battery to supplys power, you can recharge it in time. & 9679;Wide Applications: This nuclear radiation detector can be widely used in nuclear physics, environmental monitoring and industrial fields. Specifications: Material: ABS Detectable types: β, Y, X rays Measurement ranges: 0.05uSv-50mSv Battery: 1 * lithium battery, 300mAh (included) Measurement accuracy: -17% ~+25% based on 137Csy Working environment: temperature -20 °C ~50 °C, Humidity < 95% RH, no condensation Packing List: 1 * Nuclear Radiation Detector