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Gas Type: Sulfur Dioxide ;
Sensor: Electrochemical Sensor ,Two-year Life;
Resolution: 1ppm ;
Measure Range: 0-20ppm T90 30se ;
Alarm Value Can be Set ;
Low / high concentration alarm;
OperatingTemperature: -10~50℃; Auto/Manual Power Off;
Low Concentrationalarm;
3.7V Rechargeable Lithium-ion Battery;
Battery Working Runtime: 60 Hours ;
