Features Sensitive Operation This detector adopts GM meter, GM meter sensor, which ensures superior detection sensitivity. Visual and audible alarm: The detector can provide audible and visual alarms if radiation is detected. And the alarm value can be set. Wide Application This detector can detect nuclear radiation radioactivity and β X radial γ X, NDT, radiation from the nuclear industry site and nuclear power plant, hospital CT radiation, iodine 131, etc. Large Battery Capacity: Equipped with 2000mAh large capacity rechargeable battery, this detector will no longer need to replace the battery frequently, which is more convenient and environmentally friendly. EASY CARRYING - Comes with compact size and light weight also, you can easily take this detector with you to help you in your work. Specification: Item Type: Radiation Detector Material: ABS Battery: 18650 2000mAh lithium-ion battery (supplied with built-in battery) Detection radius type: γ, X and β radial Detector: GM Energy Compensation Tube (Geiger Meter Tube) Dose rate range: 0.01 to 1000μSv/h (maximum 10mSv/h) Cumulative dose: 0.01μSv/h to 500.0mSv Energy response: 50keV at 1.5MeV less than or equal to ±30% (for CS 137) Sensitivity: 80CPM/μ Sv/h (for Co 60) Alarm threshold: One Dose rate: can be set to 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0μ Sv/h b. Cumulative dose: can be set to 0.05, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, 10.0 μ Sv Measurement display: the dose rate is updated once per second and the response of the protection alarm is less than 5 seconds. Display screen: LCD color screen Alarm mode: visual, audible Package list: 1 x radiation detector. 1 x user manual. 1 x Charging Cable 1 x Storage Box Package List 1 x Radiation Detector 1 x Manual 1 x Charging Cable 1 x Storage Box