Feature: 1. Real Time Measurement: The dose rate is measured in real time, and the cumulative dose is recorded at the same time. The dose rate alarm threshold and dose alarm threshold can be set arbitrarily (continuously adjustable). You can view the start time of the current dose accumulation. 2. Statistical Measurement Function: Statistical time can be set arbitrarily between 00 and 99 hours. With dose rate and dose dual alarm function. The two alarm modes of sound and flash can be combined arbitrarily to meet various alarm needs. 3. Fault Prompt Function: With sensor fault prompt function (display shows "////GMBad"). When the radiation dose rate exceeds 10 mSv/h, it has the function of blocking warning (999Sv/h is displayed on the display). 4. Data Export Function: Built in memory, the accumulated dose value, dose rate alarm threshold and dose alarm threshold data will not be lost after power failure. With a calendar clock function, the clock can also be guaranteed to run normally after the machine is turned off. With data export function, equipped with USB interface, it is convenient to connect with computer, and the dose data can be read, analyzed and managed by dose management system software. 5. User Friendly Design: Easy operation, continuous monitoring of battery power, and a low power status prompt. Chinese and English menus can be switched freely. LCD backlight can be switched. Specification: Item Type: Radiation Detector Product Material: ABS Detector: Energy Compensation Type GM Counter Tube Measuring Range: Dose Rate: 0.00μSv/h ~ 10mSv/h Dosage: 0.00μSv ~ 999.9Sv Dose: 0.00μSv ~ 999.9Sv Sensitivity: >1.5cps/μSv/h (Relative To 137Cs) Energy Response: 48keV ~ 3.0MeV Relative Error: <5% (at 1mSv/h) Battery Model: 2 x AAA Batteries (Battery Not Included) Power Consumption: <24mW Power Dissipation: <24mW Temperature Characteristics: -10℃～+50℃≤±10%. Package List: 1 x Radiation Detector1 x Data Cable1 x Screwdriver