Feature: Can switch multiple radiation dose rate units such as Sv/h,Gy/h, mR/h, , With sound alarm when dose rate and cumulative dose are over . Can adjust the of dose rate and cumulative dose. With date and time display, can adjust the date and time. Can adjust the screen brightness. Specification: model: DM162 Product name: Portable ionizing radiation detector Display: LCD screen display Sensor type: geiger counter( counter/ Tube) Radiation dose rate range: 0.01Sv/h-1000Sv/h Cumulative dose: 0.01Sv-500.0mSv Energy response:50KeV~1.5MeV30%(to 137CS-) Sensitivity: 80CPM/Sv/h(to Co-60) Power supply: rechargeable lithium battery 2000mah DC 5V(1A-2A) port charging line( included) Operation temperature: -10C~45C Operation humidity: under 80% : plastic colour: black Package Contents: 1 x Nuclear Radiation Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.