FNIRSI GC-01 Geiger Counter Nuclear Radiation Detector X-ray Beta Gamma Detector Dosimeter Radioactive Tester Marble Detector    Description: The FNIRSI GC-01 nuclear radiation detector uses a higher-precision Geiger-Miller counter. Counter for detecting the intensity of ionizing radiation (beta particles, gamma rays and x-rays). Use a gas tube or a small chamber as a probe.When the voltage applied to the probe reaches a certain range.Each time the ray is ionized in the tube to produce a pair of ions, it can be amplified to produce an electric pulse of the same size.And recorded by the connected electronic device.The number of rays per unit time thus measured.The alarm threshold measurement rate can be arbitrarily selected. Key features & 9679;Detect x ray,γ rays and β rays. & 9679;High sensitivity, can be used in various environments. & 9679;Data is saved during shutdown. & 9679;High-definition LCD display.The status display is clear at a glance. & 9679;Light/Vibration/Sound 3 combined alarm modes to choose. & 9679;Real-time clock display. & 9679;The product can preset dose rate and cumulative dose alarm  threshold. Product parameters: Product name:Nuclear radiation detector Size:120x78x27mm  Types of detection rays:y rays, x rays, ß rays  Detector:Energy Compensation GM Tube(Geiger Technology Tube) Dose equivalent rate:0.00μSv-500.0mSv Cumulative dose equivalent:0.00μSv-500.0mSv Energy range:48keV-1.5Mev≤±30% (for 137Cs-) Language:Chinese/English switch Sensitivity:80CPM/μSv(For Co-60) Dosage unit:μSv/h,μGy/h,mR/h,cps,cpm Switch Power supply:1100mAh lithium battery Alarm method:light, vibration, sound