compensation. Easy to Operate: The instrument features a G-M counting tube that enjoys a high flexibility and can measure the environmental backgrounds. The dose rate is measured in real-time, the cumulative dose and the AVG dose are displayed simultaneously, and it has a calibration function. Multifunctional Design: The alarm value can be set by user, it will promote an alarm sound when over the limit ranges, and timely alarm to ensure safety use. Multiple Settings Design: Support for the setting of time, language, alarm value, record interval, quotations, timing shutdown, cumulative clear, version information. Lithium Battery: Built-in 1000mAh large capacity rechargeable lithium battery, low consumption and support for repeat use, economical and practical. Wide Applications: This radiation tester can be widely used in nuclear power plants, accelerators, the iron steel industry, the chemical industry, isotope applications, radiology laboratories and ambient monitoring of nuclear facilities. Specifications: Material: plastics Battery: 1 * 3.7V, 1000mAh lithium battery (included) Detection rays: X, , hard rays Display: 2.8inch TFT color display Energy response: 48keV~1.5meV Sensitivity: 0.25cps/usv/h (137Cs-) Real time measurement ranges: 0-99.99uSv/h Average measurement ranges: 0-99.99uSv/h Display ranges of accumulated value:0~99.999 MSV Resolution: 0.01usv/h Real-time value error: lt;10% Average value error: lt;3% Product power consumption: lt;35mw Working environment: -20~50; 20-80%RH humidity Charging mode: USB Type-C Item size: 151 * 68 * 25mm / 5.94 * 2.68 * 0.98in Item weight: 190g / 6.70ounce Package size: 190 * 95 * 60mm / 7.48 * 3.74 * 2.36in Package weight: 220g / 7.76ounce Packing List: 1 * Radiation Detector