Features 3 in 1 Testing: Comes with 0.01-1000μSv/h wide measuring range of radioactive substances, the Geiger counter can detect hard β, γ and X rays. Alarm Function: Supports easy manual setting on the threshold valve, this nuclear radiation detector is equipped with automatic alarm function. Better Display: Large HD digital display has low power consumption, together with the accurate counting tube, the testing and reading are easy. With ABS Shell: The casing is mainly made of premium ABS material, which is durable with pressure, falling and wearing, offering good protection. Flexible Using: Can be widely used in detecting domestic nuclear radiation, industrial nuclear radiation, treatment nuclear radiation and more. Specification: Item Type: Nuclear Radiation Detector Material: ABS Power Supply: 1 x built in 18650 lithium ion battery with 2200mAh capacity. Ray Type: For hard β, γ and X rays. Detector Type: Metal Cover Counter Tube Measurement Range: 0.01-1000μSv/h Energy Response: 40KeV-1.5MeV Measurement Accuracy: Better Than ± 20% Measurement Unit: μSv/h, mSv/h, mR/h, CPS, μSv, mSv. Alarm Value Function: Alarm threshold can be set. Alarm: Sound, vibration, with independent switch. Accumulated Time: 1-9999 minutes adjustable. Accumulated Dose: Automatic accumulation, can be manually reset. Maximum Hold: Automatically hold the maximum value. Curve Observation: Curve graph of the last hour, and automatic calculation of maximum and average values. Measurement Mode: Fast and smooth modes. Voice: Chinese and English menus. Working Temperature: -20℃ ~ +60℃ Working Humidity: 5% - 95%RH, non condensing. Charging Time: <6H Package List:1 x Nuclear Radiation Detector 1 x Charging Cable1 x Storage Bag Note:Read the user manual carefully before use. Package List 1 x Nuclear Radiation Detector 1 x Charging Cable 1 x Storage Bag