Synetica enLink Status-T User manual

enLink Status-T
Temperature Sensor Probes, User Guide
LoRaWAN Wireless Temperature Sensor Probes
•LoRaWAN long range wireless
•Battery powered
•Up to 3 high accuracy stainless steel temperature probes
•Built in “edge processing” to automatically generate alarms for many applications
Applications
•Legionella compliance monitoring
•Remote asset temperature monitoring
•Freezer monitoring
•Soil temperature monitoring
•Food storage temperature monitoring
•HVAC pipe and duct temperature
monitoring
enLink Status-T accurately measures temperature with three
precision temperature probes with a range of –55°C to +125°C.
Temperature measurement via flexible, long lead probes allows
precise temperature monitoring in a wide variety of applications
including HVAC duct and pipes, food storage, soil, remote asset
and legionella monitoring.
The three high accuracy, high precision, digital temperature
sensors are housed in waterproof stainless probes connected via
flexible 1 metre length cables. Built in “edge processing”
automatically generates alarm messages for a range of
applications including legionella compliance and food temperature
monitoring.
Readings are transmitted to the cloud using long range LoRa
wireless, where the data can be displayed and analysed.
The unit is battery powered with long life of 3+ years#.
Features
•Up to 3 temperature probes*
•LoRa long range wireless
•Frequency Range 863-870MHz*
•Frequency Range 902-928MHz*
•Up to +16dBm Tx Power
•Built in USB port for power and
configuration
•Battery powered
•CE / FCC compliant
•RoHS compliant
•Made in the UK
*Option/Model dependent, see Selection Guide
#Dependent on settings and environment

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1. 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.
*Note: In LoRaWAN 1.1, AppEUI was renamed to JoinEUI.
For many applications Synetica can supply enLink Status units with the AppEUI and AppKey pre-configured, so providing
the LoRa gateway has the matching values, the join process will happen automatically once the Status 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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2. Powering the unit
To power the device ON, remove the cover of the enLink Status by unscrewing the two screws on the cover. Locate the
power switch, shown below and using small screwdriver gently slide the power switch towards the Off position.
Insert the 2 x AA sized Lithium 3.6V batteries taking great care to insert them the correct way around. Locate the plus
(+) and minus (-) signs on the battery and use the plus (+) and minus (-) guides on AA battery holders to insert the
batteries in the proper direction. Both batteries face in the same direction.
Be sure to insert the minus (-) end first and remove the plus (+) end first when replacing the batteries.
Lithium batteries have very high energy capacity and a great degree of care should be exercised to ensure
that all batteries are new, from the same manufacturer, installed the correct way around and are not in
any way damaged. Refer to Section 8 for more details.
Check that the batteries are correctly inserted and then slide the power switch to On.
Switch to the ON position
Once powered ON, 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 Mode LED will blink GREEN five times to show that the join has
been completed. The LED’s will then switch off to conserve the batteries.
Blinking Green LED –Device Successfully Joined
On
Off

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3. Setting / changing the LoRaWAN keys and device parameters
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.
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.
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 cee2.
enLink logon screen
The screen below will show with the enLink Main Menu options. Enter Qto enter the Quick Start Menu.
enLink Main Menu

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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. 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. Press Enter when the key is correctly entered to return to the Quick Start Settings Menu.
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.

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Reboot Required notification
Check your LoRaWAN network server to verify that the enLink device has joined successfully.
4. 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. 15 minutes or longer is recommended to extend battery life.
Press Enter when the key is correctly entered to return to the Quick Start Settings Menu.

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5. Alarm Configuration
enLink Status devices feature “edge processing” to provide intelligent alarming for a wide variety of applications. The
alarm monitoring feature is optimised to operate at low power levels and only transmit when there is a change of alarm
state to maximise battery life.
Each alarm type has an individual alarm status message with the following parameters:
•Alarm status.
•Total number of alarm activations.
•Alarm duration –the total time that the sensor has been in an alarm state.
Please refer to the enLink Payload Structure document.
Alarms can be configured to be in one of 5 modes of operation:
1. No alarming
2. High threshold alarm
3. Low threshold alarm
4. In band alarm
5. Out of band alarm
6. Accessing the alarm settings
Press C(Configure Device) from the Quick Start Settings Menu to enter the alarm configuration menu. The
Temperature Probes menu will show. This menu displays the current temperature of all probes and the current alarm
settings.
It is possible to configure the alarm settings for each temperature probe individually, or set them all to the same
parameters using the A(Configure All Probes Simultaneously) option.
Mode 1 - No alarming
In this mode no alarms will be processed or transmitted. This is the lowest power setting mode. All temperature
readings are still sent according to the device transmit interval.
To set the unit for No alarming, enter the A(Configure All Probes Simultaneously) and the screen below will show.
Enter 1and all alarms will be disabled. Each temperature probe can be configured individually if required using the
menu above.

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Mode 2 - High threshold alarm
High threshold alarm operates as shown in the diagram below. The hysteresis level is symmetrical about the alarm
level.
To set the unit for High threshold alarming, enter the A(Configure All Probes Simultaneously) and the screen below will
show.
Enter 2(High threshold alarm), the menu below will show.
Enter 6(Options), the menu below will show.
Enter Uand set the upper alarm level (the value should be between -55 and 125)
Next enter Hand set the upper bound hysteresis level (the value should be between 0 and 50)
Enter Xto exit to the Temperature probes menu and review the settings.
Hysteresis
Hysteresis
Upper AlarmLevel
Inactive
Alarm
Inactive

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Note: Each temperature probe can be configured individually if required using the menus above.

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Mode 3 - Low threshold alarm
Low threshold alarm operates as shown in the diagram below. The hysteresis level is symmetrical about the alarm level.
To set the unit for Low threshold alarming, enter the A(Configure All Probes Simultaneously) and the screen below will
show.
Enter 3(Low threshold alarm), the menu below will show.
Enter 6(Options), the menu below will show.
Enter Land set the Lower alarm level (the value should be between -55 and 125)
Next enter Yand set the upper bound hysteresis level (the value should be between 0 and 50)
Enter Xto exit to the Temperature probes menu and review the settings.
Hysteresis
Hysteresis
LowerAlarmLevel
Inactive
Alarm
Inactive

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Note: Each temperature probe can be configured individually if required using the menus above.

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Mode 4 –In band alarm
The In band alarm is ideal for applications such as Legionella temperature monitoring. Legionella bacteria is commonly
found in water. The bacteria multiply where temperatures are between 20-45°C and nutrients are available. The bacteria
are dormant below 20°C and do not survive above 60°C, typically it is necessary to generate an alert when the
temperature is between 20°C and 50°C.
In-band alarm mode operates as shown in the diagram below. The High and low alarm levels can be individually set. The
hysteresis levels for the high and low alarm levels can be set independently and are symmetrical from the alarm level.
To set the unit for in band alarming, enter the A(Configure All Probes Simultaneously) and the screen below will show.
Enter 4(In band alarm), the menu below will show.
Enter 6(Options), the menu below will show.
Alarm
Inactive
Inactive
Inactive
Alarm
Alarm
Alarm
Hi AlarmLevel
Lo AlarmLevel
Hysteresis
Hysteresis
Hysteresis
Hysteresis

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Enter Uand set the Upper bound alarm level (the value should be between -55 and 125)
Next enter Hand set the Upper bound hysteresis level (the value should be between 0 and 50)
Now enter Land set the Lower bound alarm level (the value should be between -55 and 125)
Finally enter Y and set the Lower bound hysteresis level (the value should be between 0 and 50)
Enter Xto exit to the Temperature probes menu and review the settings.
Note: Each temperature probe can be configured individually if required using the menus above.

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Mode 5 - Out of band alarm
The Out of band alarm mode operates as shown in the diagram below. The High and low alarm levels can be individually
set. The hysteresis levels for the high and low alarm levels can be set independently and are symmetrical from the
alarm level.
To set the unit for Out of band alarming, enter the A(Configure All Probes Simultaneously) and the screen below will
show.
Enter 5(Out of band alarm), the menu below will show.
Enter 6(Options), the menu below will show.
Inactive
Hi Alarm
Lo Alarm
Hi Alarm
Inactive
Inactive
Inactive
Hi AlarmLevel
Lo AlarmLevel
Hysteresis
Hysteresis
Hysteresis
Hysteresis

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Enter Uand set the Upper bound alarm level (the value should be between -55 and 125)
Next enter Hand set the Upper bound hysteresis level (the value should be between 0 and 50)
Now enter Land set the Lower bound alarm level (the value should be between -55 and 125)
Finally enter Y and set the Lower bound hysteresis level (the value should be between 0 and 50)
Enter Xto exit to the Temperature probes menu and review the settings.
Note: Each temperature probe can be configured individually if required using the menus above.

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7. Temperature Probe Connections
The enLink Status can have 1, 2 or 3 temperature probes connected.
Connect the temperature probes according to the table below depending on the quantity of temperature probes used.
Terminal
Function
Cable Colour
Temperature Sensor
Number
1
+VE
RED
Sensor 1
2
GND
3
D1+
YELLOW
Sensor 1
4
D1-
BLACK
5
D2+
6
D2-
7
D3+
8
D3-
One Temperature Sensor Probe Fitted
Terminal
Function
Cable Colour
Temperature Sensor
Number
1
+VE
RED
Sensor 1 and 2
2
GND
3
D1+
YELLOW
Sensor 1
4
D1-
BLACK
5
D2+
6
D2-
7
D3+
YELLOW
Sensor 2
8
D3-
BLACK
Two Temperature Sensor Probes Fitted
Terminal
Function
Cable Colour
Temperature Sensor
Number
1
+VE
RED
Sensor 1,2 and 3
2
GND
3
D1+
YELLOW
Sensor 1
4
D1-
BLACK
5
D2+
YELLOW
Sensor 2
6
D2-
BLACK
7
D3+
YELLOW
Sensor 3
8
D3-
BLACK
Three Temperature Sensor Probes Fitted

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8. Battery Installation / Replacement
enLink devices use SAFT LS14500 or EVE ER14505 AA size 3.6 Volt Lithium Thionyl Chloride (Li-SOCl2) batteries (non-
rechargeable) or direct equivalent.
No other batteries are approved for use in the device.
Lithium Thionyl Chloride batteries have very high energy capacity and must be used and handled with care observing the
guidance below.
WARNING
Risk of death or serious injury from explosion or fire.
•Keep out of sight and reach of children.
•Fire, explosion and burn hazard - do not recharge, short circuit, crush, disassemble, incinerate.
•Due to the high terminal voltage (3.6V), they are not suitable as direct replacements for other battery technologies in the same can sizes.
•When not in use the Batteries must be stored in a non-Hazardous Area.
•Do not change batteries in an explosive gas atmosphere.
•When installing batteries, do not snag the battery terminal on the clip or the battery may be damaged. Do not apply excessive force.
•Do not drop. Dropping the battery may cause damage. If a battery is dropped, do not install the dropped battery into the unit. Dispose of dropped
battery promptly per local regulations or per the battery manufacturer’s recommendations.
Guidance
•Always install the batteries correctly as per instructions taking great care to observe the battery polarity.
•Ensure that the contact points are clean and conductive.
•All batteries must be the same model from the same manufacturer.
•Do not mix old and new batteries or batteries from different manufacturers.
•Do not heat or attempt to recharge the battery.
•Do not dispose of in a fire.
•Only install approved batteries: SAFT LS14500 or EVE ER14505 Lithium Thionyl Chloride AA Battery 3.6 Volt, or direct equivalent.
Safe disposal
•Please recycle responsibly, a wide range of schemes are available.
•Do not dispose of in normal waste or in a fire.

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9. Power Considerations
The device is powered with 2 x 3.6V Lithium-Thionyl chloride (Li-SOCl2) AA sized batteries.
The temperature sensors consume additional power while actively sensing and therefore, to prolong battery life, the
sampling interval should be set to the longest period practical for the application. Sampling / transmission intervals of
less than 15 minutes place strain on the batteries, limiting their capacity and should be avoided if possible.
Battery capacity is dependent on ambient temperatures and this should be considered when estimating battery life. Low
temperatures slow down electrochemical reactions significantly and increase the internal resistance of the batteries.
High temperatures increase the battery self-discharge. The chart below illustrates the effect of temperature on the
available battery capacity.
Battery capacity vs current at various temperatures for
SAFT LS14500 batteries.
Battery life is also highly dependent on the LoRa spreading factor used. Higher spreading factors result in longer active
times for the radio transceivers and shorter battery life. Positioning devices in closer proximity to a gateway will
generally result in lower spreading factors, shorter time on air and much lower transmit power.
10. LoRaWAN Payload Decoder
The latest LoRaWAN payload decoders and guides are available on the Synetica GitHub repository:
https://github.com/synetica/enlink-decoder
A live payload decoder which allows you to paste LoRa payloads in Hexadecimal or Base 64 and see the correctly
decoded results can be found at the link below:
https://synetica.github.io/enlink-decoder/
11. Technical Support
For technical assistance, please visit the downloads section of our web site at www.synetica.net or email us at
[email protected]