1、Usage: Nuclear radiation detector can detect radioactive substances, radioactive equipment, ore, jade, marble decorative materials, safety inspection facilities, etc. 2、Great Performance: The energy compensation GM counter tube is used as the detector, the error is less than 5% (1mSv /h), the accuracy is up to 0.01USV/h, to ensure accurate measurement. High sensitivity, wide measuring range, long duration, real time update of the detection value, boot can be detected at any time. Daily use of nuclear radiation detectors helps to avoid radiation hazards in daily life. 3、Humanized Design: LCD large screen, can be convenient to quickly read real time value. When power failure, the counter will automatically stored data, more humanized. 4、Alarm Setting: Enter the alarm setting option and set the alarm value of dosage. When the radiation value exceeds your set value, the alarm will be timely in the high risk environment. There are two alarm modes you can choose from. Two alarm modes (sound, flash) can be set freely on and off. 5、Simple Operation: Compact and portable, with simple and clear operation interface. Built in memory, even if power failure, the accumulated dose value, dose rate alarm threshold and dose alarm threshold data will not be lost. 1 x Geiger Counter1 x Specification1 x Power Cord Item Type: Geiger CounterMaterial: ABSWeight: Approx. 286g/ 10.1ozDetector Types: Beta, Gamma and X rayEnergy Response: 48keV to 3.0MeV (137Cs-)Relative Error: < 5% (at 1mSv/h)Measurement Range: Dose rate: 0.00μSv/h to 10mSv/hSensitivity: > 1.5cps/μSv/h (vs.137Cs)Operating Temperature: -10℃-+50℃≤+10%Power: 0.25WBattery: Polymer lithium battery 2500mAh (included)Charging Time: 4 to 5 hoursVoltage: 5V