▶Over-limit sound and light alarm reminder: the radiation monitor has high measurement sensitivity. Automatic audible and flashing alarms when dose rate radiation dose exceeds threshold. ▶High detection performance: ultra-fast detection with low measurement error, Geiger radiation detector detects Beta Gamma X-rays almost immediately, real-time update of radiation dose data and average value at every second interval. ▶Detection range: Our radiation detector uses a 48mm Geiger counter tube with a detection range of 0.05uSv-50mSv, which can detect the radiation level of any object or any environment, small size, and the clip design is easy to carry. ▶OLED display: easy to observe under different lighting environments, easy to read data, real-time display of instantaneous dose rate, cumulative dose rate, average dose rate. ▶50 hours of continuous measurement: USB charging, built-in lithium battery, 50 hours of continuous measurement after full charge, charging only 2-3 hours, used for radiation detection of antiques, building materials, furniture, food, etc.