S31B-LB - LoRaWAN Temperature & Humidity Sensor


Elevate environmental monitoring with Telemetry2U's integration of the Dragino S31B-LB, a LoRaWAN Temperature and Humidity Sensor, offering precise and reliable measurement for effective climate control in various settings.

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 S31B-LB is a state-of-the-art LoRaWAN Temperature and Humidity Sensor, integral for precise measurement of environmental conditions. Utilizing the highly accurate and stable SHT31 sensor from Sensirion, this device ensures reliable data on temperature and humidity levels. When integrated with Telemetry2U, it becomes a powerful tool for controlling and monitoring climate conditions in a range of environments.

Robust Sensor Design: The S31B-LB's SHT31 sensor is encased in a waterproof, anti-condensation housing, ensuring its durability and long-term stability in various conditions. This robust design is ideal for consistent, long-term monitoring, particularly when used in conjunction with Telemetry2U's comprehensive IoT solutions.

Efficient and Far-Reaching Communication: Leveraging LoRa wireless technology, the S31B-LB can transmit data over exceptionally long ranges at low data rates. This capability ensures ultra-long range communication with minimal power usage, aligning perfectly with Telemetry2U's ethos of efficient and effective IoT deployment.

Advanced Features for Enhanced Monitoring: The sensor is equipped with a temperature and humidity alarm feature, enabling instant notifications for specified conditions. Additionally, its Datalog feature allows for data storage when out of LoRaWAN network range, with automatic upload once the network is restored, offering seamless integration with Telemetry2U's platform.

User-Friendly and Long-Lasting: Supporting BLE for easy configuration and wireless OTA updates, the S31B-LB is designed for user convenience. Its powerful 8500mAh Li-SOCI2 battery ensures up to 5 years of service, making it a reliable component in long-term environmental monitoring strategies, especially when paired with Telemetry2U's robust IoT framework.

Simple Setup and Seamless Connectivity: Each unit comes pre-loaded with unique LoRaWAN registration keys, simplifying the setup process. Once registered, the sensor automatically connects to the LoRaWAN server, integrating effortlessly with Telemetry2U's system for real-time environmental 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 S31B-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