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Detects CO2,6-in-1 Indoor Air Quality Monitor, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc.

SKU: GW40.0006

Q
Does it have an auto-calibration? How often is the value refreshed?
Answer Question
A
The calibration is super simple. Press all 3 buttons until the a timer appears and counts down from 200 seconds. It requires the user to place it out doors to calibrate to 500ppm which is the average ppm outdoors.
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