S31-LB - LoRaWAN Temperature & Humidity Sensor


Maximize environmental control with Telemetry2U's integration of the Dragino S31-LB, a highly precise LoRaWAN Temperature and Humidity Sensor, engineered for accurate and reliable monitoring of air conditions.

New customers will enjoy 60-Day's FREE access on Telemetry2Us' IoT Platform. Read more here...

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Manufacturer: Dragino
$195- +GST
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The Dragino S31-LB is a cutting-edge LoRaWAN Temperature and Humidity Sensor designed to measure the ambient environment with precision. Featuring the Sensirion SHT31 sensor, known for its calibration accuracy and long-term stability, the S31-LB becomes an indispensable tool for accurate climate monitoring. Integrated with Telemetry2U, it offers a comprehensive solution for tracking and managing environmental conditions effectively.

Durable and Reliable Sensor Design: The SHT31 sensor within the S31-LB is encased in a waterproof, anti-condensation casing, ensuring its durability and suitability for long-term use in various environmental settings. This robust construction is ideal for consistent monitoring, especially when combined with Telemetry2U's sophisticated IoT solutions.

Long-Range, Low-Power Connectivity: Employing LoRa wireless technology, the S31-LB facilitates data transmission over extensive ranges at low data-rates. This ensures ultra-long range communication and high interference immunity while minimizing power consumption – attributes that perfectly complement Telemetry2U's efficient IoT deployment approach.

Advanced Monitoring Features: Equipped with a temperature and humidity alarm feature, the S31-LB can send instant alerts for specific environmental thresholds. Its Datalog capability stores data when out of LoRaWAN network range, ensuring continuous recording and seamless integration with Telemetry2U's analytics platform.

User-Friendly and Long-Lasting: The S31-LB supports BLE for straightforward configuration and OTA updates, enhancing user convenience. Its robust 8500mAh Li-SOCI2 battery offers up to 5 years of operation, aligning with Telemetry2U's commitment to delivering long-term, reliable IoT solutions.

Effortless Setup and Integration: Each S31-LB unit comes pre-loaded with unique LoRaWAN registration keys, facilitating a smooth setup. Once registered to a local LoRaWAN server, it automatically connects, integrating seamlessly with Telemetry2U's system for real-time temperature and humidity tracking.



Choose the 12-Month Subscription with Telemetry2U



When you select a"12-month Platform Subscription", we take care of the initial setup for you. Your Dragino LoRaWAN with all be shipped with all necessary configurations for seamless integration into Telemetry2U's IoT platform. All you'll need to do is register your account with Telemetry2U and add and your device to your account - it's that easy.

IoT Platform Features

Refer to our Quick Guide to help get started - you'll be up an running in no time!

Attribute name Attribute value


  • LoRaWAN 1.0.3 Class A
  • Ultra-low power consumption
  • External 3 meters SHT31 probe (For S31-LB)
  • Measure range -55°C ~ 125°C
  • Temperature & Humidity alarm
  • Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
  • Support Bluetooth v5.1 and LoRaWAN remote configure
  • Support wireless OTA update firmware
  • Uplink on periodically
  • Downlink to change configure
  • IP66 Waterproof Enclosure
  • 8500mAh Battery for long term use


  • Wireless Alarm and Security Systems
  • Home and Building Automation
  • Automated Meter Reading
  • Industrial Monitoring and Control
  • Long range Irrigation Systems,etc. 

Common DC Characteristics:

  • Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~ 3.6v
  • Operating Temperature: -40 ~ 85°C


Temperature Sensor:

  • Range: -40 to + 80°C
  • Accuracy: ±0.2 @ 0-90 °C
  • Resolution: 0.1°C
  • Long Term Shift: <0.03 °C/yr


Humidity Sensor: 

  • Range: 0 ~ 99.9% RH
  • Accuracy: ± 2%RH ( 0 ~ 100%RH)
  • Resolution: 0.01% RH
  • Long Term Shift: <0.25 %RH/yr


LoRa Spec:

  • Frequency Range,  Band 1 (HF): 862 ~ 1020 Mhz
  • Max +22 dBm constant RF output vs.
  • RX sensitivity: down to -139 dBm.
  • Excellent blocking immunity



  • Li/SOCI2 un-chargeable battery
  • Capacity: 8500mAh
  • Self-Discharge: <1% / Year @ 25°C
  • Max continuously current: 130mA
  • Max boost current: 2A, 1 second


Power Consumption:

  • Sleep Mode: 5uA @ 3.3v
  • LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
Package contents

Package Includes:

  • 1 x S31-LB LoRaWAN Temperature & Humidity Sensor 


Dimension and weight: 

  • Device Size: 120 * 55 * 200 mm
  • Device Weight: 370g



DataSheet, Document Base

User Manual -- Online Latest

Shared Folder for all Dragino Products