What is the Aranet4 device?
The Aranet4 sensor is a battery powered CO2meter with
additional measurements of temperature, relative humidity and
atmospheric pressure*. The device is suitable for monitoring
the CO2 level in your school, oce or home environment.
Measurement data are displayed on power ecient e-ink
screen allowing for long battery life. Additionally the device can
provide a visual and sound notications in case the CO2 level
has exceeded high concentration level above 1400 ppm (level
associated typically with complaints of drowsiness and poor air
quality).
Using the Aranet4 app on your smart devices it is possible to
wirelessly access the current and historical measurement data
and adjust the conguration of the Aranet4 device. The Aranet4
app allows connecting several Aranet4 sensors to monitor their
parameters remotely from one smart device.
Additionally, up to 100 Aranet4 devices can be connected to the
Aranet PRO base station. Refer to chapter Using Aranet4 device
with the Aranet PRO base station.
*Atmospheric pressure data are available only on the Aranet app.
The Aranet4 sensor screen explained
1. CO2concentration level in ppm (parts per million)
2. Temperature of the air in Celsius or Fahrenheit. Refer to the
switch positions of the Aranet4 in chapter Switch positions
explained.
3. Relative humidity of the air (RH%).
4. Battery level.
5. Buzzer status. The speaker symbol is visible when buzzer
function is activated. The conditions when buzzer should
sound is adjusted using the Aranet4 application.
6. Bluetooth status. If the Bluetooth symbol is visible, then
Bluetooth connectivity function is enabled. Refer to switch
positions of the Aranet4 in chapter Switch positions explained.
Make sure Bluetooth connectivity is enabled on your smart
device if you would like to connect to the Aranet4 device.
7. The Aranet radio status. If the Aranet radio symbol is visible,
then the radio connectivity with Aranet PRO base station is
enabled. Refer to switch positions of the Aranet4 in chapter
Switch positions explained.
8. CO2indication mode. If the leaf symbol is visible, then CO2
level indication is set to plant mode (plants require higher
CO2 level than humans). If the leaf symbol is not visible, then
CO2 level indication is set to human mode. Selection of the
mode can be done using the Aranet4 app.
9. CO2threshold level indication.
In case the CO2indication human mode is selected:
• Green represents normal level (below 1000 ppm),
• Yellow represents average level (1000 to 1400 ppm),
• Red represents high level (above 1400 ppm).
In case the plant mode is selected:
• Green represents normal level (above 500 ppm),
• Yellow represents average level (500 to 300 ppm),
• Red represents high level (below 300 ppm).
10. CO2calibration mode indication. Symbol “A” is displayed
when calibration is set to automatic. No letter is displayed
when calibration is set to manual mode. Refer to switch
positions of the Aranet4 in chapter Switch positions
explained.
Switch positions explained
The Aranet4 device has switches that allow the user to adjust
the preferences of device operation.
To access the switches, open the lid of the battery compartment.
While batteries remain inserted, adjust the pin position (up
or down) using the pin tool that has been supplied with the
Aranet4 device (or any other suitable thin tool).
Switches can be adjusted while batteries are removed as
well. Note that if you remove the batteries, the measurement
history will be erased. The changed preference setting will be
enabled once the batteries are reinserted.
The position of the switches has the following meaning:
AUTO / MANUAL - switch the CO2calibration mode to either
manual (default position) or automatic mode.
The Aranet4 device is calibrated at the factory. However,
the user can perform CO2calibration manually if required.
To initiate the manual CO2calibration, change the switch
position from MANUAL to AUTO and back to MANUAL
(maintain maximum 1 sec between each movement of
switch positions). Indication about started calibration
and its progress will be displayed on the screen. Do not
interrupt the calibration process once it has started.
During the manual calibration the Aranet4 device must be
exposed to fresh air (about 400 ppm of CO2) and the environment
should be stable (not changing). Maintain a distance of at least
1 meter from the device during the calibration process. In case
of calibration failure, ensure that the environment ts the
requirements and repeat the process.
Manual calibration can be initiated 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 400 ppm (for instance,
outdoors or room with good air exchange) daily.
Use MANUAL calibration mode in case you are not certain
which mode to use.
°C / °F - switch to either Celsius or Fahrenheit degrees.
Bluetooth / 0 - enable or disable (0) the Bluetooth connectivity.
Aranet radio / 0 - enable or disable (0) the Aranet radio
connectivity. Refer to chapter Using Aranet4 device with the
Aranet PRO base station.
How to pair the Aranet4 to my smart
device
The Aranet4 device can be connected to a smart device using
the Bluetooth connection and the Aranet4 app (iPhone and
Android based). Make sure Bluetooth connectivity is enabled
on your smart device and on your Aranet4 device.
To connect your Aranet4 device to your smart device follow the
below steps:
• Launch the Aranet4 app and on the main page (My devices)
add a new device by clicking on the (+) symbol.
• Select your Aranet4 device from the list.
• When prompted, conrm the start of pairing.
• Type in the 6 digit passcode that is shown on the display of
your Aranet4 device.
Using Aranet4 device with the Aranet PRO
base station
The Aranet PRO base station serves as a device for collecting,
storing and maintaining data from all types of Aranet sensors,
including Aranet4. Each Aranet PRO base station can connect
up to 100 sensors and stores the measurement data in its local
memory for up to 10 years.
Find out more about the Aranet PRO base station at
www.aranet.com and follow the User Guide on how to pair
Aranet sensors to the Aranet PRO base station.
To connect the Aranet4 device to the Aranet PRO base station,
initiate the sensor pairing mode on the Aranet PRO base station
and initiate the pairing on the Aranet4 device by changing the
switch position from disable (0) to enable (radio simbol).
Return and Warranty
In case of return or warranty claim, please contact your
sales representative. For Terms and Conditions refer to
www.aranet.com/support/
1
2
10
3 4
5
6
789
°C
AUTO
MANUAL °F 0 0
