Feature:1. Visual, Audible Alarm: The detector can provide audible and visual alarms if radiation is detected. And the alarm value can be set.2. Sensitive Operation: This detector adopts GM counter, GM counter sensor, which ensures a premium detection sensitivity.3. Large Battery Capacity: Equipped with a 2000mAh large capacity rechargeable battery, this detector will no longer need to replace the battery frequently, which is more convenient and green.4. Wide Application: This detector can detect nuclear radiation radioactivity and X ray γ radial β X ray, NDT, radiation of nuclear industry site and nuclear power plant, CT radiation of hospital, iodine 131, etc.5. Easy Carrying: Comes with a compact size and a light weight as well, you can easily take this detector with you to help with your work.Specification:Item Type: Radiation DetectorMaterial: ABSBattery: 1 x 2000mAh 18650 lithium ion battery (shipped with built in battery)Detection Ray Type: γ, X and β radialDetector: Energy compensation GM tube (Geiger counter tube)Dose Rate Range: 0.01 to 1000 μ Sv/h (Maximum 10mSv/h)Cumulative Dose: 0.01 μ Sv/h to 500.0mSvEnergy Response: 50keV to 1.5MeV less than or equal to ± 30% (for CS 137)Sensitivity: 80CPM/ μ Sv/h (for Co 60)Alarm Threshold:a. Dose Rate: Can be set as 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0 μ Sv/hb. Cumulative Dose: Can be set as 0.05, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, 10.0 μ SvMeasurement Display: The dose rate is updated once a second, and the protection alarm response is less than 5 secondsDisplay Screen: LCD color screen displayAlarm Mode: Visual, audible .Package List:1 x Radiation Detector1 x Manual 1 x Charging Cable1 x Storage Box