The inverted screen
alerts when CO
²
concentration is too
high and unhealthy.
The calibration
progress.
Do not remove batteries
during firmware upgrade.
The battery is exhausted.
Replace the batteries.
Frost can damage
the sensor. The
recommended
operating temperature
of the sensor is 0 °C to
50 °C (32 °F to 122 °F).
Pin code representation,
when pairing device
with smartphone trough
Aranet4 app via
Bluetooth
The Aranet4 device is calibrated at the factory. However, the user can perform CO
²
calibration manually when needed. During the manual calibration the Aranet4 device
must be exposed to fresh air (about 420 ppm of CO
²
) and the environment should be
stable (not changing). Maintain a distance of at least 1 meter from the device during
the calibration process.
To start the manual CO
²
calibration, change the position of the switch (see next
chapter Switch positions explained) from MANUAL to AUTO and then back to
MANUAL (maintain maximum of 1 second between each movement).
The calibration progress will be displayed on the screen of the device. In case of a
calibration failure message, make sure that the environment requirements are met
and repeat the process from the beginning.
Manual calibration can be done using the Aranet4 app as well.
In case of automatic calibration mode, the Aranet4 device needs to be exposed to a
fresh air at around 420 ppm (for instance, outdoors or room with good air exchange)
at least 8 hours each month.
CO
²
calibration
Aranet4 User Manual
3
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