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Gas Type:Nitrogen Dioxide Gas (NO²) ;
Resolution: 0.1ppm ;
Sound, Vibration, Light Alarm Adjustable alarm values, alarm sound up to 80 dB;
OperatingTemperature: -10~50℃;
Auto/Manual Power Off;
Low Concentrationalarm;
3.7V Rechargeable Lithium-ion Battery;
Battery Working Runtime: 60 Hours ;
