eLICHENS Aura-CO2 User manual
W W W . E L I C H E N S . C O M
User manual –LoRaWAN CO2
sensor, Aura-CO2
Page 2 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
1. Introduction.......................................................................................................... 3
2. Features............................................................................................................... 4
3. Specifications....................................................................................................... 5
4. Aura-CO2 at a glance .......................................................................................... 7
5. Configuration........................................................................................................ 8
6. Station settings .................................................................................................. 10
7. Main screen ....................................................................................................... 11
8. Station Fixation.................................................................................................. 12
9. Maintenance ...................................................................................................... 14
10. LoRaWAN Frames.......................................................................................... 14
11. Web data access............................................................................................ 15
12. Upgrade Firmware.......................................................................................... 16
13. Data Update.................................................................................................... 18
Page 3 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
1. Introduction
Aura-CO2 is a five-year battery-operated CO2 monitor that measures in real time
Carbone Dioxide concentration, temperature, pressure and relative humidity. Data is
displayed on a large e-Paper screen and on the online dashboard when Aura-CO2 is
connected to the LoraWAN network. End users can customize sound & visual alarms
through the eLichens Aura smartphone application.
Aura-CO2 embeds the eLichens Foxberry CO2 gas sensor, a cutting-edge dual-
channel NDIR (Non-dispersive Infrared) gas sensor integrated in a small and compact
form factor. It is based on eLichens’ patented technology including a proprietary IR
micro-source, patented optical design and advanced signal processing algorithms.
Using the auto calibrated Foxberry gas sensor ultra-low power mode, Aura-CO2
reaches more than 5 years on battery without recharging, maintenance or calibration.
Studies showed that there is a relationship between the ambient CO2 level
and the need for air renewal. The CO2 level is linked to the number of people
in a room. The higher the level, the greater the risk of transmission of
pathogens and viruses such as coronavirus. Aura-CO2 alerts you when the
CO2 level is too high. By optimally adjusting the ventilation and air conditioning system,
the user can ensure good indoor air quality at all times and prevent the transmission
of pathogens. This reduces the risk of infection by diseases such as COVID-19.
Page 4 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
2. Features
Product
• CO2, ambiant temperature, relative humidity and atmoshperic pressure sensors
• ePaper screen for a clear display of relevant information
• Configurable visual and audible CO2 level alarms
• LoRaWAN & BLE connectivities
• Compact size, wall mounted and battery powered for an easy installation
• Maintenance free
•Battery lifetime >5 years
Ecosystem
• Easy configuration with our iOS and Android mobile application and BLE
• Unlimited cloud storage, accessible through API and dashboards
• Web and mobile data visualization applications
Applications
• Indoor air quality monitoring for schools, offices, homes, stores, …
• Air purification control
• Demand control ventilation
• HVAC management
Page 5 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
3. Specifications
Operating conditions
Temperature range
0-50°C
Humidity range (1)
0-95%RH
(1) Non-condensing
Power supply
Battery type
2 x 3.6V AA Lithium Batteries
Battery Lifetime (2)
>5 years
(2) Contact eLichens for replacement batteries.
Mechanical
Dimensions
92 x 60 x 30 mm
Mounting options
Wall-mounted (anti-theft system option)
Stands on a flat surface table
Screen dimensions
73mm (2.9’’)
CO2Sensor
Technology
Proprietary dual-channel low-power NDIR
Measurement Range
400-5000ppm
Absolute Accuracy
±30ppm ±3% of reading
Output Resolution
10 ppm
Aura is equipped with Foxberry CO2 gas sensor, the eLichens best in class ultra-low
power NDIR sensor, already used by key players in HVAC, safety and industrial
markets.
Foxberry sensors are designed to accurately monitor Air Quality over time with ZERO
drift through its innovative self-calibration system.
Temperature Sensor
Absolute Accuracy
±0.5°C at 25°C and ±1.0°C in the
full range
Output Resolution
0.1°C
Page 6 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
Humidity sensor
Absolute Accuracy
±3% RH
Output Resolution
1% RH
Pressure sensor
Absolute Accuracy
±1 hPa
Output Resolution
1 hPa
LoRaWan
Protocol version (3)
LoRaWAN 1.0
Device class
A
Features
OTAA, ADR, Adaptative Channel Setup
Regions
US (902-928), EU (863-870), AS (923)
Report interval
4 data points sent every hour by LoRaWAN= 15 min
data rate.
Payload
Status CO2 Temperature Humidity Pressure Battery
(3) Disable by default. Activation via the app.
With the LoRaWAN network, Aura is connected anywhere to the cloud, NO WIFI is
required.
BLE
Protocol version
BLE V4.2
Services
•Do the LoRaWAN provisioning
•Get device information
•Get measures
•Set CO2 alarm threshold
•Enable/Disable audible alarm
•Synchronize date and time
•Set date format
•Set Temperature unit
•Upload 14 days offline data
•Upgrade Firmware
With BLE connectivity, Aura communicates directly with any Bluetooth connected
device and allows users to access settings.
Page 7 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
4. Aura-CO2 at a glance
Two AA Lithium batteries provide more than 5 years of autonomy to Aura-CO2. The
batteries are already installed, a short press on the user button and the device will
start. Air quality data will automatically be collected in the room and send through the
LoRaWAN network.
Page 8 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
5. Configuration
Configuration of the product can be performed thanks to a mobile application available
on Android and iOS. The links are hereafter, or it can be found by using the keywords
“elichens aura”.
https://play.google.com/store/apps/details?id=com.elichens.a
uraco2
https://apps.apple.com/fr/app/aura-co2/id1565190899
Note: Smartphone Bluetooth must be ON.
To use the mobile application, an account needs to be
created, or an existing eLichens account can be used.
When choosing a password, the following rules have to
be followed:
At least 8 characters
At least 1 lower case letter [a-z]
At least 1 upper case letter [A-Z]
At least 1 number [0-9]
At least 1 special character [$@$!%*#?&,;]
The account can be created directly on eLichens’ Cloud
too:
https://lab.elichens.com/register/
Page 9 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
Station connection is performed through Bluetooth,
by selecting “Add a new station” on the “Stations”
screen.
After having selected “Add a new station”, Bluetooth
needs to be turned ON on the station. To do so, a
long press (>3 seconds) on the user button is
required. A short beep will be heard and the
Bluetooth icon will be displayed on the station’s
screen.
(1) Station ID will display in the browse menu,
(2) Station pairing is performed (it can take up to 10 seconds),
(3) The settings page opens, allowing the user to configure the station.
Page 10 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
6. Station settings
(1) LoRaWAN settings: the second line “Network” allows the user to pair the station
with the LoRaWAN network. This step has to be performed at the first station
installation, and every time the station is moved to a new place.
(2) CO2 alarm configuration. Alarm threshold can be configured, and audible alarm
can be turned ON or OFF.
(3) CO2 sensor calibration: an automatic calibration check is performed every
month. A manual calibration is possible too, in case an issue is detected. To
perform it, place the station outside during a few minutes and then select
“Manual” and select “OK”.
(4) Date, time and temperature unit can be configured.
Page 11 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
7. Main screen
The main screen is organized as follow:
Navigation between screen can be performed as follow:
Page 12 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
8. Station Fixation
The station is fixed either with 2 screws or with an optional anti-theft adapter.
Standard Fixation
Page 13 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
Anti-theft Fixation (optional)
Page 14 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
9. Maintenance
No maintenance processes are needed, AURA CO2 station was designed to work
more than 10 years without any maintenance or calibration process, except for battery
replacement.
This replacement must be done by formed employee and batteries must be those
specified by supplier.
Please contact us for exact references.
10. LoRaWAN Frames
Uplink Frames
Sent every hour on port 1 without acknowledge.
Sensor information
CO2
H-
45min
CO2
H-
30min
CO2
H-
15min
CO2
H-
0mim
Temperature
Humidity
Pressure
Battery
level
1 byte
1st bit: alarm
(1=on alarm)
2nd bit: detector error
(1=error detected in last
hour)
3th bit: reserved
4..7: payload version = 2
WARNING: bits are MSB
first
Unit: ppm/10
10 bits * 4 (5 bytes, unsigned)
WARNING: each CO2 value is
coded on 10 bits, MSB first.
Unit: 0.1°C
9 bits
unsigned
WARNING:
bits are MSB
first
Unit: %
7 bits
unsigned
WARNING
: bits are
MSB first
Unit: hPa
2 bytes
unsigned
Unit: 0.01V
(subtracted
1.50V)
1 byte
unsigned
Downlink Frames
The product is configurable thanks to downlink frames. All app setups are available
with those commands. Those frames are referenced and downloadable following this
link. Answer on port 3, without acknowledge.
Page 15 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
11. Web data access
All the collected data can be accessed through a dedicated web interface too, available
here: https://lab.elichens.com/
All the connected stations are accessible through the left column. The buttons on the
bottom right side of the interface are used to change the history length and a click on
“Advanced view” brings the user to an advanced dashboard where data can be
exported in a .CSV file.
Page 16 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
12. Upgrade Firmware
To have the latest Firmware, please connect a smartphone with AURA app to the
concerned station. Then choose “Upgrade” menu:
A warning message pop up on the screen warning about not interrupting update
procedure (by disconnecting Bluetooth, rebooting phone, low-battery shutting down,
closing app …). Once ready, select “Start”.
Page 17 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
The upgrade process will go on. Once done, click on the button labelled “Upgrade
done”.
Page 18 of 18
User manual –LoRaWAN CO2 sensor, Aura-CO2
This document is the property of eLichens SA and may not be
reproduced or communicated without its permission.
[CONFIDENTIAL]
13. Data Update
To update the last 14 days of AURA CO2 data, please connect a smartphone with
AURA app to the concerned station. Then choose “Upload data” menu:
A warning message pop up on the screen warning about not interrupting update
procedure (by disconnecting Bluetooth, rebooting phone, low-battery shutting down,
closing app …). Once ready, select “Start”.
For more information, please contact us:
eLichens SA
17 rue Félix Esclangon
38000 Grenoble
FRANCE
www.elichens.com
Table of contents
Other eLICHENS Accessories manuals
