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ALTI
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Compensate the pressure changes with appropriate altitude of location when measure.
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ALARM
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Alarm while CO2 concentration exceed one threshold, Alarm sound can be on or off.
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OUTSIDE
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Modify the outside CO2 concentration,for defining the ventilation rate.
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CALI
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Calibrate the sensor while the reading deviates from the actual CO2 concentration.
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DATALOGGER
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Show the past CO2 and Temperature records in the past 24 hours.
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MaxMin
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Show the Max and Min CO2 reading before being cleared or powered off after Power On.
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rcFS
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Recover the factory setting, if the device cannot show accurate reading.
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