Size: 120x78x27mm Types of detection rays: rays, x rays, rays Detector: Energy Compensation GM Tube Dose equivalent rate: 0.0-1000Sv/h(10mSv/h) Cumulative dose equivalent: 0.00Sv-500.0mSv Energy range: 48keV-1.5Mev30% (for 137Cs) Sensitivity: 80CPM/Sv(For Co-60) Dosage unit: Sv/h,Gy/h,mR/h,cps,cpm Switch Power supply: 1200mAh lithium battery Alarm method: light, vibration, sound 1.Nuclear Radiation DetectorCounter nuclear radiation detector with built-in GM sensor, fast response time and high accuracy, able to detect Gamma, Beta and X-rays. Cumulative dose equivalent: 0.00uSv-500.0mSv. Energy range: 48KeV-1.5MeV 30%for 137Cs) 2.Smart AlarmEnter the alarm setting option to set the current dose alarm value and the accumulated dose alarm value. Whether the detector screen is in sleep state or in operation,the radiation dose detected exceeds the alarm threshold,the radiation monitor will automatically alarm. Light/Vibration/Sound 3 combined alarm modes to choose. 3.Multifunctional CounterOur the counter has other various setting, such as alarm setting, system clock setting and unit setting.Easy one-handed operation. 4.Working PrincipleUses a 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. 5.Application AreasWidely applied in the environment where existing ionize radiation. Such as home improvement radiation, geological survey, iron, Inspection vehicles, nuclear power plants, industry, radiology, radiology laboratories and so on