Feature: 1. 1. Portable size: This handheld nuclear radiation detector is of convenient size to carry, you can put it in your pocket and continue to use it. 2. 2. Wide range of applications: The radiation tester can be widely used in nuclear power plants, accelerators, steel industry, chemical industry, isotope applications, industrial X and r nondestructive testing, r radiation, radioactivity laboratories and environmental monitoring of nuclear facilities. 3. 3. Large display screen: The nuclear radiation detector adopts a large LCD screen, which allows you to read the detection data clearly and easily, and you can get the results in time. 4. 4. Regarding the safety value alarm: The alarm value can be selected from 0.5, 1.0, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0 usv/h. You can choose the appropriate value according to your needs. 5. 5. Easy to use: You can enter the setting interface with one key to set the alarm preset value, and then bring the tester close to the object to get the result. 6. 6. The instrument can preset alarm thresholds for dose rate and cumulative dose. Secondary data display: This tester can display and accumulate dose. Three selective alarm modes: sound, light and vibration to remind you better. Specification: Material: plasticSize: 13.5*7*2.5cmColour: BlackDetection rays: X, r and hard beta raysMeasuring range:A dose equivalent rate: 0.01 to 1000 usv/h (maximum: 10 mSv/h)B cumulative dose equivalent: 0.01 μSv～500.0 mSvC energy range: 50 keV～1.5 MeV ≤±30% (calculated at 137 cs I)Relative Innate Error: ≤ ± 15% (137 cs MSV/h)Flexibility: 80 CPM/usv/h (same as Co-60)Alarm valve:Dosing rate: Choose from 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0 usv/h for disposal.Cumulative dose: Choose from 0.05, 0.5, 1.0, 1.5, 2.0, 5.0, 10.0, 20.0, 50.0, 100.0 m Sv for treatment.Dose rate units: usv/h, μGy/h, m R/hUse environment: temperature -10℃～45℃Relative humidity: ≤95% (+45℃)Power supply: 2*AA batteries (not included) Package List: 1* Radiation Detecto