Synetica enLink Air User manual

Quick Start Guide
enLink Air
Wireless Air Quality Monitor
•LoRaWAN long range wireless.
•Built in sensors for:
•Temperature (°C)
•Humidity (%RH)
•Carbon Dioxide (CO2 )
•Oxygen (O2)
•Barometric Pressure (Pa)
•Particles PM 1, 2.5, 4 and 10
•Light level (lux)
•Volatile Organic Compounds (VOC’s)
•Sound (dB)*
•Plus, up to 4 plug-in gas sensors *
O3, CO, NO2, SO2,CH2O etc.
*Optional Sensors
x4
Temperature
Humidity
Light level
VOC’s
Pressure
CO2
O2
Sound
Particles
Plus 4 Gases
The enLink Air wireless Air Quality Monitor is a
precision instrument which accurately measures up to
14 key environmental parameters including
Temperature, Humidity, Light Level, VOC’s, Carbon
Dioxide, Particulate Matter (PM1, 2.5, 4 & PM10),
Oxygen, Sound Level, Barometric Pressure, plus up to 4
plug-in calibrated gas sensors from a range of over 200
gases / sensitivities.
Readings are transmitted to the cloud using long range
LoRa wireless, where the data can be displayed and
analysed.
A built in USB port allows all parameters including air
quality data, wireless signal strength and wireless
network configuration to be viewed and set using
simple menus via any USB enabled host such as a PC or
Mac.
Features
• Multiple sensor options*
• LoRa long range wireless
• Frequency Range 863-870MHz*
• Frequency Range 902-928MHz*
• Up to +18dBm Tx Power
• Built in USB port for configuration
• Externally powered
• CE compliant
• RoHS compliant
• Made in the UK

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Introduction
enLink LoRaWAN devices are configured using OTAA (Over-the-Air-Activation).
OTAA is the most secure way to connect a device to the LoRaWAN network. In OTAA, the device performs a Join-procedure
with the network, during which a dynamic DevAddr (device address) is assigned and security keys are negotiated with the
device.
The OTAA configuration requires the following parameters to be correctly set:
•DevEUI: End-device Identifier. It is unique for every device and is set at device manufacture.
•AppEUI: Application Identifier. Used to identify the end application.
•AppKey: Application key. Used to create the session keys.
For many applications Synetica can supply enLink Air with the AppEUI and AppKey pre-configured, so providing the LoRa
gateway has the matching values, the join process will happen automatically once the enLink Air unit is in wireless range
and switched on.
The DevEUI is always set at device manufacture and is unique. The device AppEUI and AppKey can easily be set via the USB
connection if required and the process is detailed later in this document.

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1. Join enLink devices to the LoRaWAN network
enLink devices in wireless range and with the correct AppEUI and AppKey settings set will automatically join the LoRaWAN
network when they are first powered up.
The unique DevEUI is printed on all enLink devices and is also present in the QR code. The DevEUI can be used to identify
the device once joined to the network.
enLink Air Unit Label
To power the device ON, apply power (12V-24V DC) to the unit as detailed in the enLink Air Installation Guide. For setup
purposes, the unit can also be powered from the USB connection.
Remove the enLink Air cover plate
using a Torx T10 screwdriver.
Once powered, the enLink device will send a Join request message to the LoRaWAN Network Server. The Status LED will
blink RED as shown below whilst the Join process is taking place. Depending on factors such as signal strength, RF
interference etc the Join process may take several seconds to complete.
Blinking Red LED –Attempting Join
When the device has successfully joined the network the Status LED will blink GREEN for several seconds to show that the
Join has been completed. The LED’s will then switch off.
O
n
O
f
f
Model:
ENL-AIR
Air Quality Monitor
Input 12-24Vdc
DevEUI:
00-04-A3-0B-00-04-27-DB
0010123
www.synetica.net
Made in the UK
Serial No:

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Blinking Green LED –Device Successfully Joined
2. Setting / changing the enLink LoRaWAN keys
For many applications, Synetica can supply enLink units with the LoRaWAN AppEUI and AppKey parameters pre-configured
to your requirements, whereby if the LoRa gateway has matching keys the join process will happen automatically once the
unit is in wireless range and switched on.
The DevEUI is always set at device manufacture and is unique. The device AppEUI and AppKey can easily be set via the USB
connection as detailed below.
Once the cover plate is removed, connect a micro USB cable to the enLink unit. The device will attach to a COM port on
your PC.
Using a terminal program (e.g. Tera Term https://ttssh2.osdn.jp/) connect to the COM port used by the enLink device.
To verify which COM port is being used, check the Windows™ Device Manager (In Windows - Click the Start button, type
device manager into the search box and tap Device Manager on the menu.) Expand the Ports (Com & LPT) menu as shown
below.
In your terminal program press the Enter key. An enLink summary screen will appear as shown below. The default
password is the last four digits of the displayed DevEUI, in the screen below this is 599c.
enLink logon screen
The screen below will show with the enLink Main Menu options. Enter Qto enter the Quick Start Menu.

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enLink Main Menu
The Quick Start Menu contains only the parameters that normally need to be configured to setup the device and join the
LoRa network.
From the Quick Start Menu you can change the AppEUI and AppKey.
Quick Start Settings Menu
From the Quick Start Settings Menu, access the AppEUI setting by entering e. Enter the 16 character AppEUI using
numbers and letters a to f. Do not include spaces or any other characters. Pressing Swill enter the default AppEUI which
you can then edit. Rwill set a random AppEUI. Press Enter when the key is correctly entered to return to the Quick Start
Settings Menu.
AppEUI setting
From the Quick Start Settings Menu access the AppKey setting by entering k. Enter the 32 character Appkey using
numbers and letters a to f. Do not include spaces or any other characters. Pressing Swill enter the default AppKey which
you can then edit. Rwill set a random AppKey. Press Enter when the key is correctly entered to return to the Quick Start
Settings Menu.

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AppKey setting
Press Xfrom the Quick Start Settings Menu to return to the enLink Main menu.
The header will show ** Reboot Required ** as shown below. The new key settings will not take effect until the enLink
device is restarted. Enter Rto reboot followed by OK. The device will restart with the entered AppEUI and AppKey and
attempt to join the LoRa network.
Reboot Required notific ation
Check your LoRaWAN network server to verify that the enLink device has joined successfully.
3. Setting / changing the transmit interval
Access the Transmit Interval setting by entering t from the quick start menu.
Transmit Interval settings
Select a fixed transmit interval from the menu options.
Press Enter when the interval is correctly set to return to the Quick Start Settings Menu.

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4. Configuration Menu
The enLink Air configuration menu allows you to view current sensor readings and also to change various functions of their
behaviour such as calibration data. To enter the Configure Device menu press cfrom the main menu. A screen similar to
the one below will show. The exact parameters shown will vary according to the model and sensors fitted.
5. CO2Sensor Auto Calibration Configuration
To view and set CO2sensor calibration information, enter c and the screen below will show.

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Please see the table below for information on each menu item.
Menu Item
Description / details
Last/Minimum
Reading
Shows the last CO2value read and the minimum CO2value read since the last auto
calibration.
Next Auto-Cal due
Shows when the next autocalibration routine will occur
Last Auto-Cal result
Shows the value of the last auto calibration result. Used internally by the sensor.
Calibration Success
This shows the total number of successful auto calibrations since the device was powered
up.
Out-of-bounds
Ignored
Shows the number of times that auto calibration did not run due to the Out Of Bounds
setting.
E - Enable/Disable
Auto-Cal
Enables or disables the auto calibration routine.
T - Set Target CO2
Level
This is the known CO2corresponding to the minimum value the sensor has read since
power-up or last calibration. It is normally 'fresh air' or the lowest level when the building is
unoccupied
overnight or at weekends. Typically this is 400 ~ 450 ppm.
K - Set to Known CO2
Level
This will re-calibrate the zero point of the sensor to a known gas concentration. The sensor
should be placed in this gas concentration and allowed to stabilise.
This command runs in the background and will take 8 to 10 seconds to complete.
As an example, fresh air is typically around 400 ~ 450 ppm.
O - Out-of-bounds
check
The Out-of-bounds value is used to ignore the calibration if the minimum value the sensor
has read is not within a sensible range of the target concentration level.
So, if the target concentration level is 400, the Out-of-bounds value is ±50 and the
minimum reading is 451 (or more), the calibration routine is ignored.
I - Initial Interval
It is possible for the first auto-calibration to take place more quickly than the regular auto-
calibration events. This can be useful to stabilise the readings quickly after installation.
R - Regular Interval
This is the standard calibration interval, it is set to 8 days by default to accommodate a
week long period where the minimum sensed CO2level should have fallen to background
levels.
The CO2sensor needs to be exposed to fresh, clean air periodically for the auto calibration to be successful. Most occupied
areas are unoccupied for some time during a week-long period, typically at night, or at the weekend and therefore the auto
calibration runs every 8 days by default. Background CO2levels are typically around 400-450 ppm, if the background CO2
level is known to be a different value then this can be set in the “Set Target CO2Level” parameter
If a unit is placed in an area where the CO2level may not fall below a certain level, e.g. 450ppm, during the calibration
interval then the “Out-of-bounds check” parameter can be set so that the auto calibration routine does not run. As an
example, if an area is continuously occupied for a long period and the minimum CO2reading does not fall below, say
450ppm, then it is undesirable to run the autocalibration routine based on a target of 400ppm. In this case, if the “Set
Target CO2 Level” is set to 400ppm and the “Out-of-bounds check” value is set to +/-50 ppm then the autocalibration
routine will not run unless the minimum read value falls below 451ppm in the interval.
6. Live Menu
enLink Air incorporates a live data screen which shows all readings and device status for easy data validation. To enter the
Live status screen, from the Main Menu enter c for Configure Device followed by dfor Live readings display. A screen
similar to the one below will show. The sensors will vary according to the enLink Air model and the installed sensors.

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Live readings display

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7. Setup using Multitech Conduit® AEP
enLink devices can be used with a wide range of LoRaWAN gateways and LoRaWAN Network Servers. This section details
how to use enLink units with a Multitech™ Conduit LoRaWAN Gateway with embedded LoRaWAN Network Server.
MultiTech’s Conduit is a leading configurable, manageable, and scalable LoRa gateway and can be quickly and easily
configured to create a LoRaWAN network with enLink devices.
To enable LoRa devices to connect to the Conduit the AppEUI and AppKey must match those of the enLink devices.
For Multitech Conduit units running V1.6.4/1.7.0, follow the process below. Detailed instructions can be found on the
Multitech Web Site (www.multitech.net).
Logon to the Conduit and select LoRaWAN -> Network Settings
Set the Mode to Network Server, then set the Channel Plan required and set the Mask to 00FF as shown below.
Next, select the Key Management menu and set the AppEUI and AppKey. Ensure that these match the enLink devices you
want to join the LoRa network.

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Once the keys are set, select Submit. The Conduit will prompt to Save and Restart. The settings will not take effect until the
Conduit has restarted. Once the unit has restarted you are ready to join enLink devices to the network.
The Conduit gateway is now ready to receive devices onto the network. On the Conduit, select LoRaWAN -> Devices as
shown below. This screen shows details of devices which have joined the network, when they joined and when the last
message was received from them. As you add devices to the network, this is where they will appear.

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For other LoRaWAN Network Servers, including The Things Network, Loriot, Amazon AWS, Kerlink Wanesy, Resiot and
ChirpStack, please refer to the providers documentation.
8. Technical Support
For technical assistance, please visit the downloads section of our web site at www.synetica.net or email us at
[e-mail]