Sentrius RS1xx LoRa-Enabled Sensors
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455-00112 / 455-00112B
Additional Description
Sentrius� RS1xx External Sensor � 868MHz External Temperature Probe inc. LoRa and BLE
Antenna Type
Chipset (Wireless)
Semtech SX1272, Nordic nRF51822
Frequency Range (Max)
870 MHz
Frequency Range (Min)
865 MHz
It is not possible to switch/reconfigure the supported region after purchase.
The RTD Temperature Probe cable assembly must be ordered separately to the enclosure, it is not included.
Sentrius Mobile Application
Part Group
RS1xx Ext. RTD Temp Probe
Product Type
IoT Sensor
Europe (EU)
System Architecture
Bluetooth 4.2, LoRaWAN

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Can I really expect 15 km distance transmission using LoRaWAN in my day to day application operation?

All Laird Connectivity LoRa products should be referred as LoRaWAN as they all supports its protocol. LoRaWAN protocol make use of LoRa Chirp Spectrum Modulation within a license-free sub-gigahertz frequency band that allow to transmit regularly small packets up to 15km. 

It’s important to consider that 15km can only be achieved within absolute best conditions, some of which would be an outdoor “line of sight” transmission, interference free environment, ideal humidity/temperature, highest Spreading Factor, ect… Such range magnitude cannot represent any “real world” distance transmission and shouldn’t be expected by default.

What LoRaWAN Class device the Sentrius RS1xx Sensor supports?

The Sentrius RS1xx LoRaWAN sensor has been designed to use as minimum power as possible to be able to run on batteries for years in the field. Class A has been naturally chosen to fulfil this aim as its the most power efficient class. The only downside of this will be on the downlink latency where messages from the network server will only be possible after an uplink from the sensor.

There is no way to enable Class B or C behaviour on the RS1xx sensor.

Why can't I enable backlog feature on my Sentrius RS1xx LoRaWAN Sensor?

The Sentrius RS1xx backlog feature allows to store up until 4096 measurement in its flash memory that users can retrieve with either FIFO or LIFO mode. To enable this feature, you'll have to make sure of the following :

- Depending on how you want the backlog feature to operate (On Fail or Continious), choose either Laird or Laird2 packets format.

- Provide the RS1xx with the network time

The backlog feature only functions if the sensor has received a timestamp from the server. Every time a sensor will join the Network Server, it will ask to be provided with the network time. Please make sure the network provide its timestamp every time the sensor will request it as per Application Note - RS1xx LoRa Protocol, section 4.3 Server-to-Sensor Message : Set UTC Notification. 

More information on the RS1xx logging feature can be found into User Guide - Sentrius RS1xx Sensor Configuration section 8.9.

Where can I find all different RS1xx RTD probes specs?

You'll find all RS1xx RTD probes specs attached to this FAQ.

Where can I find the JOIN EUI for my RS1xx sensor?

The JOIN EUI, formerly referred to as the "APP EUI" has been renamed by the LoRaWAN Alliance, as it identifies the Join Server. This EUI can be configured the same across multiple devices, to identify which specific join server the device is to be linked to. It consists of an EUI64, 64 bit (8 byte) identifier.

Because the JOIN EUI is configurable (can be modified) by the end user, it is not included on the packaging of the sensor. A default JOIN EUI is configured at the time of manufacturing. For standard RS1xx products, any sensor/sensor kit assembled after date code: 0223451 will be configured with the current Manufacturing JOIN (APP) EUI of ECC07A0000000006. Any sensor/sensor kit assembled prior to this will be configured with the previous Manufacturing JOIN (APP) EUI of F9C60ECEA3ADC6BD

The default JOIN EUI (APP EUI), can also be found in the RS1xx User Guide, section 4.1.1, or via the RS1xx Sentrius Sensor App available from the Google Play Store or Apple Store.

Additional information for this product can be found on the Sentrius RS1xx Product Page.

*Note: Custom RS1xx products have their own unique JOIN EUI and do not use the default JOIN EUI found in the User Guide.

What is Laird Connectivity's product lifecycle EOL and PCN policy?

Laird Connectivity is committed to the long-term supply of all its standard embedded wireless modules and packaged products. Laird Connectivity’s products are specifically designed to meet the needs of the industrial and medical markets, which typically require 7 – 10 years product lifecycle. Although Laird Connectivity can’t guarantee that a component used in our products will not be obsoleted and cannot be reasonably substituted, Laird Connectivity can assure customers we will continue to sell our product when we have customer demand and can obtain the necessary components to build our products.

View our full policy here.