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Specifications:

• Detectable radiation: Beta-, Gamma- and X-rays
• Sensor Type: Geiger-Müller tube
• Energy Range: 20kev-3.0mev less than 30% (137Cs-)
• Sensitivity: 80cpm / USV / Co-60
• Accuracy: 0.01usv/h
• Real-time range 99.99usv/h
• Cumulative range 0-99.999msv
• Relative intrinsic error of less than plus or minus 10%
• Mean error: less than 3%
• Use in ambient temperatures from -25°C to +45°C
• Relative humidity less than 95%
• Power supply: 3pcs AA batteries or 1.2V rechargeable battery
• Can be powered by USB port for long-term monitoring.
• Charging: 5V 2A Micro USB input
• Size: 105*70*30mm / 4.13*2.76*1.3inch