Feature 1 High Sensitivity: The Geiger counter radiation detector has a high sensitivity of up to 80cpm/SV/(Co60), making it ideal for detecting small variations in radiation levels. 2 Reliable Measurements: The detector uses a Geiger Mueller tube counter tube to measure radiation. When each ray passes through the tube and causes ionization, the tube produces a pulse of detection current. Each pulse is detected by the tube circuit and recorded as a count. The detection range is 0 to 9999SV. Due to the random nature of radioactivity, the values detected by the dosimeter vary from minute to minute, and the readings taken over an average period of time are more correct, and the longer the time interval taken, the more accurate the mean. 3 Versatile Application: The Geiger counter is suitable for measuring , , and X ray radiation in various environments, including home renovations, radiation production facilities, healthcare, nuclear laboratories, power plants, construction materials, petrochemicals, and geological surveys. 4 Sound and Light Alarm: Regardless of whether the radiation detector screen is in sleep or working mode, when the detected radiation dose exceeds the alarm threshold, the Geiger counter will emit a loud audible sound and flashing screen alarm to take care of you and your family's health in all aspects. 5 Long Battery Life: With a powerful rechargeable lithium battery, the radiation detector can continuously measure for 24 hours after just 1 to 2 hours of charging, providing you with comprehensive detection capabilities. 6 Portable Convenience: The Geiger counter is compact and easy to carry, allowing you to take it anywhere you want to detect radiation. Its portability and continuous monitoring make it an ideal choice for home, hospital, and work place use.Item Type: Geiger CounterMaterial: Aluminum alloyWeight: Approx. 102g/3.6ozDetectable Type: Hard beta ray (), gamma ray (), X rayEnergy Range: 20kev to 3.0mev 30% (137Cs-)Sensitivity: 80cpm/SV/ (Co-60)Test Accuracy: 0.01SV/hReal Time Range: 0 to 9999SVPower Supply: Lithium battery 500mAh (shipped with built in battery) Package List1 x Geiger Counter1 x USB Cable1 x Specification1 x Plastic Box