Laird Sentrius RS1 Series User manual

A
User Guide
Sentrius™RS1xx
Version 1.0
This datasheet has been downloaded fromhttp://www.digchip.com at this page

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
2
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
REVISION HISTORY
Version
Date
Notes
Contributor
Approver
1.0
05 Dec 2017
Initial version
Christopher Hofmeister
Jonathan Kaye

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
3
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
CONTENTS
1About this Guide................................................................................................................................................ 4
2Introduction....................................................................................................................................................... 4
3Powering Up the Sensor .................................................................................................................................... 5
4Connecting to A LoRa network Server............................................................................................................... 6
4.1 AppEUI ....................................................................................................................................................... 6
4.2 DevEUI ....................................................................................................................................................... 6
4.3 AppKey....................................................................................................................................................... 7
5Adaptive Data Rate (ADR).................................................................................................................................. 8
6Device Operation............................................................................................................................................. 10
6.1 Care and Maintenance ............................................................................................................................ 10
6.2 Positioning of the Sensor......................................................................................................................... 10
6.3 LoRa Messages ........................................................................................................................................ 11
6.4 Join Sequence .......................................................................................................................................... 11
6.5 Ack/Retires .............................................................................................................................................. 11
6.6 Disconnect ............................................................................................................................................... 12
6.7 Network Time .......................................................................................................................................... 12
6.8 Backlog Feature ....................................................................................................................................... 13
6.9 Measuring Humidity ................................................................................................................................ 13
6.10 Setting up the Sensor .............................................................................................................................. 13
6.11 Sensor Firmware Version......................................................................................................................... 14
7Configuration................................................................................................................................................... 14
7.1 Label (back label space)........................................................................................................................... 14
7.2 Device Configuration ............................................................................................................................... 15
8Mobile Application .......................................................................................................................................... 15
8.1 Overview.................................................................................................................................................. 15
8.2 Install Sentrius™ Sensor Mobile App on Device ...................................................................................... 15
8.3 Connect to Sentrius™ Sensor................................................................................................................... 16
8.4 Main Screen............................................................................................................................................. 17
8.5 Configure Device ..................................................................................................................................... 17
8.6 View Sensor Data..................................................................................................................................... 18
8.7 LoRa Configuration .................................................................................................................................. 19
8.8 LoRa Network .......................................................................................................................................... 19
8.9 BLE Info .................................................................................................................................................... 20
8.10 Update Firmware..................................................................................................................................... 20
8.11 Integrating Sentrius™ Sensor into a Third Party Application .................................................................. 21
9Bluetooth SIG................................................................................................................................................... 22
10 FCC and ISED Canada Regulatory Statements ............................................................................................. 22
11 CE Regulatory .............................................................................................................................................. 23
12 EU Declarations of Conformity .................................................................................................................... 24
13 Ordering Information .................................................................................................................................. 25
14 Future Variants ............................................................................................................................................ 27
14.1 External Sensor Port ................................................................................................................................ 27
15 Additional information ................................................................................................................................ 27

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
4
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
1ABOUT THIS GUIDE
This document is the parent guide of the RS1xx Configuration Guide. It provides a comprehensive guide on how
to configure the Sentrius™ RS186 and RS191 sensors to suit the intended application. It covers all Sentrius™
RS1xx functionality, including Bluetooth and LoRa configurations in detail, as well as setting up the sensor on a
LoRa network server.
Note: Step by step instructions, screen shots, and pictures are based on the Sentrius™RS191, but the
same are applicable for the Sentrius™RS186. Any differences are noted.
2INTRODUCTION
2.1 Product Overview
The Sentrius™ RS1xx LoRa-Enabled Sensor from Laird is the ultimate in secure,
scalable, robust LoRa solutions for end-to-end control of your private LoRaWAN
network. Based on the Semtech SX1272 chipset, it offers a long range up to ten
miles, perfect for highly scalable, flexible IoT networks. The Sentrius™RS1xx Sensor
works with Laird’s Sentrius™RG1xx Series Gateways for simple out-of-the-box
integration and is compatible with third-party cloud and LoRa partners.
Figure 1: Top of the Sentrius™RS1xx Sensor
1. Temperature and
humidity sensor
2. Bluetooth button
3. LEDs
4. Fixing holes
Figure 2: Back side of the Sentrius™ RS1xx
Sensor
Note: Laird has a comprehensive staff of design services engineers available to help customize the sensor.
Please contact your local Laird sales representative for more details.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
5
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
2.2 Specifications
See the RS1xx product brief for detailed specifications. It’s available from the Documentation tab of the RS1xx
Series product page: https://www.lairdtech.com/products/rs1xx-lora-sensors
2.3 Architecture Overview
The major pieces of a LoRa network can be seen in the figure below. The RS1xx sensor is an “End Note” in the
diagram below. The RS1xx requires the other components in the diagram below to operate.
Figure 3: LoRa Architecture
3POWERING UP THE SENSOR
Note: The Sentrius™ Sensor has no power switch. Inserting the batteries powers up the device.
3.1 Battery Types
The Sentrius™ Sensor is designed to be used with primary cell AA batteries, either lithium or alkaline 1.5V cells.
Lithium batteries have more capacity, but are costlier. Lithium batteries also have a lower temperature range of
-40° C, as opposed to -20° C for alkaline. You must specify the type of battery being used because the algorithm
that determines the percentage of remaining battery life must account for the battery type.
Default Battery Type for the Sentrius™ Sensor: Alkaline batteries
3.1.1 Changing Battery Type
The battery type can be changed via the Sentrius™ mobile application. Refer to the Configuration section for
details.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
6
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
Figure 4: Back label
3.2 Inserting Batteries
Insert the batteries as indicated in Figure 2.
Note: The battery door cover has a gasket inside to keep out liquids. It is important that both screws on
the back of the unit are properly inserted and tightened. Failure to do so could result in liquid
ingress which would void the warranty on the device.
4CONNECTING TO ALORA NETWORK SERVER
The exact steps needed to connect to a LoRa network server vary by network provider but in all cases, the three
LoRa keys described below must be known by the external LoRa network server.
4.1 AppEUI
The AppEUI is an 8-byte ID used to uniquely identify your application and/or installation. For example, imagine
you are installing the Sentrius™ Sensor in a store chain. You could use a specific AppEUI to identify a specific
store or perhaps the entire chain of stores.
4.1.1 Default AppEUI
The default AppEUI is 0xf9,0xc6,0x0e,0xce,0xa3,0xad,0xc6,0xbd, and it is set in the device by Laird at the time of
manufacturing.
4.1.2 Reading or Changing the AppEUI
The AppEUI can be read or changed via the Sentrius™ mobile application. The number is generated by the end-
user, so any number can be used.
4.2 DevEUI
The DevEUI is an 8-byte ID used to uniquely identify your device. It is assigned and set in the device by Laird at
the time of manufacturing.
4.2.1 Reading the DevEUI
4.2.1.1 Back Label
The DevEUI is printed on the back label of the
sensor as highlighted in red in Figure 4.
The large area of whitespace can be used to apply
a secondary label, or write in information.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
7
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
4.2.1.2 Barcode
The DevEUI is also accessible via the 2D barcode on the back label where the last comma separated value is the
DevEUI.
Example readout: 450-0182,1,915 MHz Sentrius™ Sensor,0213117,0025CA0A010108D6
4.2.1.3 Reading or Changing the DevEUI via Mobile App
Normally there would be no need to change the DevEUI, however it can be read or changed via the Sentrius™
mobile application, if necessary. The generation of this number is governed by IEEE so a user changing the
DevEUI must be familiar with these standards.
4.3 AppKey
The AppKey is a 16-byte security key assigned to the device. It is assigned and set in the device by Laird at the
time of manufacturing.
4.3.1 Reading the AppKey
4.3.1.1 Back Label
The AppKey is printed on a removeable label that is attached to the device when it is shipped (Figure 5).
Important!
It is the user’s responsibility to keep track of what AppKey has been assigned to the device
and to keep this key secure.
Figure 5: AppKey label
4.3.1.2 Barcode
The AppKey is also accessible via the 2D barcode on the back label.
4.3.1.3 Reading or Changing the AppKey
Normally there would be no need to change the AppKey, however it can be changed via the Sentrius™ mobile
application in case that need arises.
Note: This key is write-only as there is a security risk in making it readable via the mobile application.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
8
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
5ADAPTIVE DATA RATE (ADR)
See the LoRaWAN Specification for a complete discussion of ADR. The LoRaWAN specification can be obtained
from the LoRa Alliance.
5.1 Definitions
Knowledge of the following terms is important for this section:
▪Uplink/Upstream –Transmissions originating from the sensor and received by the LoRa Network Server via
the LoRa Gateway.
▪Downlink/Downstream –Transmissions originating from the LoRa Network Server and received by the
sensor via the LoRa Gateway.
5.2 Data Rates in LoRaWAN
5.2.1 902-928 MHz US and Canada
5.2.1.1 Uplink/Upstream (Sensor > Gateway)
Table 1: 902-928 MHz upstream data rates
Data
Rate
Bit Rate
(bit/sec)
Max Packet
Size
Max Packet On-Air Time
(mS)
Approximate Link Margin (dB)
with Sentrius™Gateway
0
980
11
289
152
1
1760
53
329
149
2
3125
129
380
147
3
5470
242
380
144
4
12500
242
167
141
5.2.1.2 Downlink/Downstream (Gateway > Sensor)
Table 2: 902-928 MHz downstream data rates
Data
Rate
Bit Rate
Max Packet
Size
Max Packet On-Air Time
(mS)
Approximate Link Margin (dB)
with Sentrius™Sensor
10
3900
222
502
153
11
7000
222
277
150
12
12500
222
154
147
13
21900
222
87
144
5.2.2 863-870 MHz EU
5.2.2.1 Uplink/Upstream (Gateway > Sensor)
Table 3: 863-870 MHz upstream data rates
Data
Rate
Bit Rate
(bit/sec)
Max Packet
Size
Max Packet On-Air Time
(mS)
Approximate Link Margin (dB)
with Sentrius™Gateway
0
250
51
2466
157
1
440
51
1315
154
2
980
51
616
152
3
1760
115
615
149

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
9
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
Data
Rate
Bit Rate
(bit/sec)
Max Packet
Size
Max Packet On-Air Time
(mS)
Approximate Link Margin (dB)
with Sentrius™Gateway
4
3125
222
615
147
5
5470
222
348
144
6
11000
222
174
141
5.2.2.2 Downlink/Downstream (Gateway > Sensor)
Table 4: 863-870 MHz downstream data rates
Data
Rate
Bit Rate
(bit/sec)
Max Packet
Size
Max Packet On-Air Time
(mS)
Approximate Link Margin (dB)
with Sentrius™Sensor
0
250
51
2466
162
1
440
51
1315
160
2
980
51
616
158
3
1760
115
615
155
4
3125
222
615
152
5
5470
222
348
149
6
11000
222
174
147
5.3 Data Rate, Sensor Performance, and Tradeoffs
5.3.1 Range
Referencing Data Rates in LoRaWAN, as the data rate decreases the RF range increases.
5.3.2 Battery Life
Referencing Data Rates in LoRaWAN, as the data rate decreases the radio is on longer, decreasing battery life.
5.3.3 Bandwidth
Referencing Data Rates in LoRaWAN, as the data rate decreases it takes longer to transmit a packet, decreasing
available bandwidth on the network and increasing the probability of RF collisions or interference.
5.3.4 EU Considerations
In the EU, many bands are highly restricted regarding how much bandwidth a device can use. For example, many
bands allow only a 0.1% duty cycle. The duty cycle is the transmit time of the device relative to the non-transmit
time. If a device transmitted a packet that was one second long, it could not transmit for another 1000 seconds
(1/1000 = 0.1%) (1000 seconds is over 15 minutes). Keep in mind that any LoRa Gateway also has duty cycle
limitations that need to be considered.
Careful planning must be done to ensure that a device does not exceed this duty cycle limitation, including
possible retries. The LoRa stack running inside the sensor monitors the duty cycle of the device and does not
allow a device to transmit if it exceeded the allowable duty cycle.
5.4 ADR and the LoRa Standard
According to the LoRaWAN standard a mote (sensor) device is responsible for lowering the data rate, while the
network server is responsible for raising the data rate.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
10
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
Figure 6: Air flow through sensor
5.4.1 902-928 MHz US and Canada
On power up, the Sentrius™ Sensor starts transmitting on data rate 1.
5.4.2 863-870 MHz US and Canada
On power up, the Sentrius™ Sensor starts transmitting on data rate 3.
5.4.3 ADR Operation
In both US and EU modes, the sensor drops its data rate by one if three consecutive packets are not
acknowledged by the LoRa network server.
After 20 packets are received by the LoRa network server, an algorithm is applied on the link margin data of
these packets and an appropriate data rate is selected. The goal of the algorithm is to operate at a data rate as
high as possible while maintaining a solid link margin. This maximizes battery life and minimizes bandwidth
without sacrificing the RF link.
5.4.4 Important Note About LoRa Network Server
The Sentrius™ Sensor is intended to work with any LoRa network server that implements ADR. Without this
feature implemented on the LoRa network server, the sensor operates at a very low data rate which has a
negative impact on battery life and network bandwidth.
At the time of this writing, The Things Network (TTN), Loriot, and Senet implement ADR. Other LoRa network
servers may provide this functionality, this is not intended to be an exhaustive list.
6DEVICE OPERATION
6.1 Care and Maintenance
The sensor can be cleaned with a mild, non-abrasive detergent. It is not waterproof so do not immerse it in
water.
The sensor does not require any calibration.
6.2 Positioning of the Sensor
For optimum response to temperature, position the sensor in a way
that air can flow though the sensor air channel.
Note: The white material is a Gortex cover that allows airflow
through the channel, while preventing liquids from
coming in contact with the sensor.
In addition, placing the sensor on a large thermal mass negatively
impacts the temperature response.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
11
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
6.3 LoRa Messages
The LoRa API is available in the RS1xx_LoRa_Protocol Guide.
6.4 Join Sequence
Before any temperature/humidity data can be sent, the sensor must first join the network. On power-up, the
sensor attempts to join the network. If a join-response message is received by the sensor, it moves on to an
internal state where it waits for the device to get the network time from the server.
If a join-response message is not received by the sensor or the network time is not received, it continues to try
and join the network server every minute.
Figure 7: Join Procedure
6.5 Ack/Retires
Sensor to LoRa network server RF messages are set using the acknowledgement mechanism. Every RF message
sent to the network server is expecting an acknowledgement message back from the network server telling the
sensor, in effect, “got your message”. The sensor retransmits the message a certain number of times depending
on the current data rate if an acknowledgement is not received. Every two unsuccessful attempts at a data rate

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
12
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
causes the sensor to lower its data rate by one. See the tables below for how many attempts are made at each
data rate.
US –RS191
Table 5: US retransmissions per data rate
Uplink Data
Rate
Total number of
retransmissions
DR4
8
DR3
8
DR2
6
DR1
4
DR0
2
EU –RS186
Table 6: EU retransmissions per data rate
Uplink Data
Rate
Total number of
retransmissions
DR7
8
DR6
8
DR5
8
DR4
8
DR3
8
DR2
6
DR1
4
DR0
2
For example, if in the US and at DR4, the maximum number of transmissions before a message is considered lost
is eight. This means it transmits twice at DR4, twice at DR3, twice at DR2, and twice at DR1. If all transmissions
are unsuccessful, the next time the device transmits, it is at DR0. If any of the data rates before that are
successful, the unit remains at that data rate until the server deems its link is good enough to step up the data
rate via ADR.
6.6 Disconnect
If the sensor detects three consecutive RF messages are lost, the sensor assumes the connection to the server is
lost and stops sending data. It reverts to the join sequence described in the Join Sequence section of this guide.
6.7 Network Time
After the sensor joins a network, it must get the network time. This is sent in epoch time, number of seconds
since January 1, 2015. Once the network time is received, the device begins sending sensor data.
Important!
The Sentrius™ Sensor is intended to work with a LoRa network server that provides network
time. Without this feature implemented on the LoRa network server, the sensor does not
operate.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
13
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
6.8 Backlog Feature
If the sensor fails to successfully send data to the network server, this data is logged to FLASH. Each backlog data
has its associated timestamp. Separate areas in FLASH are kept to store alarm and normal (non-alarm) data.
During data retrieval, the alarm section is prioritized over the non-alarm data. Each section can store 4096
records.
The backlog data can be retrieved via the LoRa interface or the Bluetooth interface. Note that in some
situations, such as the EU, it may not be practical to retrieve backlog data over LoRa due to bandwidth
limitations.
6.8.1 Backoff Period
One of the LoRa messages that can be sent to the sensor from the server (see the RS1xx LoRa Protocol Guide
which is available from the RS1xx product page) is the backoff period. Because retrieving the backlog may
consume a large percentage of the bandwidth, it may be wise to make use of the Backoff message. This message
can be used to stop the sensor from sending data for a period of time, thus opening more bandwidth for the
sensor. While a unit is in the backoff state, it continues to read the sensor but it stores its data to FLASH. The
backoff period could be assigned to the sensor from which the backlog is extracted, other sensors in the
network, or both, depending on the application.
6.8.2 Operation at 902-928 US with DR0
Normally the sensor attempts to package up to six backlog readings into a single backlog uplink message. This
keeps the total number of bytes in the packet less than 51 bytes, which is the limiting factor in the EU.
See Error! Reference source not found. for details. As noted in Error! Reference source not found., only 11
payload bytes are available when operating at DR0 in the 902-928 (NA) band. At this data rate, the sensor only
sends one backlog message at a time as this is all the data that can be fit into an 11-byte message.
6.9 Measuring Humidity
Measuring humidity accurately in certain circumstances can be difficult. Temperature swings, dew points, and
other factors can lead to condensation on the sensor, leading to inaccurate humidity readings. To combat this,
there is a heating element on the sensor itself which can be turned on to burn off this condensation and restore
the sensor to proper operation.
Because the factors that can lead to condensation vary considerably between applications, an interface to the
sensor heater over LoRa is provided. This allows the API server (see Figure 3: LoRa Architecture) to contain the
algorithm. Refer to the SiLABS si7021 datasheet for details on the Heater Control Register.
6.10 Setting up the Sensor
6.10.1 Sensor Read Period
The read period defines how often the sensor is read. For example, for a setting of 60, the sensor is read every
60 seconds.
6.10.2 Sensor Aggregate
The aggregate number is used to aggregate or bundle multiple sensor readings into a single RF packet. For
example, with an aggregate number of two and a sensor read period of 60, a RF message is sent every (60

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
14
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
seconds x 2) 120 seconds. Obviously setting the aggregate count has a big effect on the battery life of the device;
the less the device talks, the longer the batteries will last.
6.10.2.1 Operation at 902-928 NA with DR0
As noted in Table 1, only 11 payload bytes are available when operating at DR0 in the 902-928 band. This can
create a conflict with an aggregate count greater than one, as the sensor cannot fit all the sensor data into the
packet. In this case the sensor sends the last sensor reading to the LoRa API server and logs the remaining data
to FLASH. A flag is set in the uplink message notifying the server of the configuration error. It is the responsibility
of the server to update the sensor configuration to use an aggregate count of one if it is desired not to backlog
data in this case.
6.10.3 Alarm Levels
Minimum and maximum alarm levels may be set for both temperature and humidity. When an alarm is
triggered, the sensor immediately sends the data to the server. Thereafter it resumes sending data at its normal
frequency based on the sensor read period and aggregate count. If the alarm condition persists, the sensor again
sends the alarm message in one hour, ensuring the server is aware of the condition.
In addition, setting alarm levels puts sensor backlog data into a separate section of FLASH so that it may be
prioritized during backlog retrieval.
6.10.4 LED Behavior
The first LED indicator is used for LoRa status (see Figure 1: Top of the Sentrius™RS1xx Sensor). The device can
be configured to flash a LED based on the LoRa network status. A green LED flash indicates that the device is
connected to the LoRa network server, an orange LED flash indicates that the device is not connected to the
LoRa network server. See the Sensor Configuration section of this guide.
The second LED indicator is used for Bluetooth. The device can be configured to flash a blue LED when the
device is connectable, or advertising. See the Sensor Configuration section of this guide.
6.11 Sensor Firmware Version
The sensor firmware version can be requested from the sensor by the LoRa network server.
7CONFIGURATION
7.1 Label (back label space)
The large open white space on the back label can be used to apply a secondary label by the end user. For
example, it may be useful to write a friendly name on the device.
Figure 8: Back label white space

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
15
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
7.2 Device Configuration
Table 7: Device configuration
Name
Description
Bluetooth
LoRa
Format App FLASH
Format the external FLASH on the device to
clear out backlog data.
x
Set Battery Type
Set the battery type being used on the
device.
x
x
Set BLE LED Behavior
Configure Blue LED to flash when advertising
(connectable)
x
x
Set Humidity Alarm Thresholds
Set the min/max humidity values that will
trigger an alarm condition.
x
x
Set LoRa AppEUI
Read/Write
x
Set LoRa AppKey
Write Only
x
Set LoRa DevEUI
Read/Write
x
Set LoRa LED Behavior
Configure Green/Orange LED behavior
based on LoRa status.
x
x
Set Temperature Alarm Thresholds
Set the min/max temperature values that
will trigger an alarm condition.
x
x
Set Temp Humidity Sensor Read
Options
Set parameters related to reading the sensor
and sending data over LoRa.
x
x
Set Friendly Name
Set a user-friendly name on the device.
x
8MOBILE APPLICATION
8.1 Overview
The Sentrius™ mobile application allows a user to configure a device, troubleshoot a device, see real-time sensor
data, and update firmware.
8.2 Install Sentrius™ Sensor Mobile App on Device
Search the appropriate app store (Apple or Android) for the Sentrius Sensor App and install on device.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
16
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
8.3 Connect to Sentrius™ Sensor
Press the Bluetooth button (see #2 on Figure 9).
Figure 9: Top of the Sentrius
The Sentrius™ Sensor begins advertising and become connectable.
8.3.1 Select Device
The DevEUI printed on the pack of the label is sent as part of the Bluetooth advertisement. Look for that DevEUI in the Device List as
shown in Figure 10.
Figure 10: Select device to connect to

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
17
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
8.4 Main Screen
Figure 11 is the main screen of the mobile application.
Figure 11: Mobile application main screen
8.5 Configure Device
8.5.1 Sensor Configuration
Navigation
Screen
Comments
The read period, aggregate
number, as well as temperature
and relative humidity alarms can be
configured. See Section 6.10 Setting
up the Sensor for more
information.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
18
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
Navigation
Screen
Comments
Friendly Name –Used to assign a
user-friendly name to the device,
such as it location.
LoRa LED Behavior –Used to
control the cadence of the
heartbeat LED (time in seconds).
For example, a setting of 10 flashes
the appropriate LED every ten
seconds. A setting of 0 turns off the
LED. With a setting of 65535, the
device flashes the green LED during
LoRa transmit and the orange LED
during LoRa receive.
See the LED Behavior section of this
guide for additional information.
Note: The LED flash has an impact
on battery life.
8.6 View Sensor Data
Navigation
Screen
Comments
Temperature graph is similar, only
the humidity graph is displayed in
this example.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
19
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
8.7 LoRa Configuration
Navigation
Screen
Comments
Use to update LoRa Keys.
Note: AppKey is write-only for
security reasons.
8.8 LoRa Network
Navigation
Screen
Comments
Use the LoRa Info page to view data
on the LoRa Network.

Sentrius™RS1xx
User Manual
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/ramp
20
© Copyright 2017 Laird. All Rights Reserved
Americas: [phone]
Europe: [phone]
Hong Kong: [phone]
8.9 BLE Info
Navigation
Screen
Comments
Use the BLE Info page to view
information on the BLE connection.
8.10 Update Firmware
Navigation
Screen
Comments
Click the Hamburger Menu to bring
up a navigation pane.