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CO2 range:400~5000PPM (resolution 1PPM);
Accuracy ±(50PPM+5% of reading)
Time: Year-Month-Day Hour-Minute ;
Battery :750mA/H 3.7V Li-Ion battery ( 14500),removable ;
Charging port :micro USB、DC5V ;
Humidity data display ;
Temperature data display ;
Four buttons :ON/OFF key; Up ""+"" key; Down ""-"" key;MODE key"
