S31-NB - NB-IoT Outdoor Temperature and Humidity Sensor


The Dragino S31-NB, an NB-IoT Temperature and Humidity Sensor, offers precise environmental monitoring for applications like smart farming, weather stations, and home use. Equipped with the reliable SHT31 sensor, it ensures accurate readings in a durable, waterproof casing. Integrated with Telemetry2U, it provides instant alerts for deviations, and tools to visualise and analyse real-time data. Telemetry2U enhances its functionality with additional metrics like VPD, Delta-T, and dew point, making it an indispensable tool for remote monitoring

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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Precision Monitoring for Diverse Environments


The S31-NB stands as a testament to Dragino's commitment to precision in IoT solutions. It utilises the Sensirion SHT31 sensor, renowned for its calibration, linearization, and temperature compensation, ensuring highly accurate temperature and humidity measurements.

Robust and Long-Lasting Design Housed in a waterproof and anti-condensation casing, the S31-NB is designed for long-term use in various environments, from agricultural fields to personal homes. Its robust construction guarantees consistent performance and longevity.

Flexible Connectivity for IoT Integration Supporting multiple uplink methods including TCP, MQTT, and UDP, the S31-NB ensures flexible and reliable data transmission to various IoT servers. This adaptability is key for its application in diverse monitoring scenarios.

Extended Battery Life for Reliable Operation Powered by an 8500mAh Li-SOCI2 battery, the S31-NB is engineered for extended use, potentially lasting several years depending on the usage environment and update frequency.

Enhanced Capabilities with Telemetry2U Integration with Telemetry2U amplifies the sensor's utility. It enables instant alerts via email, SMS, or voice when sensor readings deviate from the norm. Users can visualise real-time data and analyse historical trends. Furthermore, Telemetry2U adds value by calculating Vapor Pressure Deficit (VPD), Delta-T, and dew point, offering deeper insights for more informed decision-making.



Choose the 12-Month Subscription with Telstra SIM



When you select one of the "12-month IoT Platform Subscriptions", we'll handle all necessary configurations for seamless integration into Telemetry2U's IoT platform. If you also ordered a Telstra 500KB NB-IoT SIM card with your device, That'll also be installed and configured prior to shipment. The SIM card is locked to the device and the data capped at 500KB, so there is no chance of any suprise charges. 

IoT Platform Features

Check out a Live Demo of the Telemetry2U IoT Platform in Action

See how easy it is to add your own Dragino NB-IoT Devices to Telemetry2U

Attribute name Attribute value


  • NB-IoT Sensor Node,B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
  • Ultra Low Power Consumption
  • Monitor environment temperature
  • Monitor relative air humidity
  • Temperature & Humidity alarm
  • Multiply Sampling and one uplink
  • 8500mAh Battery for long term use
  • 3 meters sensor cable ( for S31-NB)
  • Support BLE remote configure and update firmware
  • Uplink on periodically
  • IP66 Waterproof Enclosure
  • AT Commands to change parameters
  • Uplink via MQTT, MQTTs, TCP, or UDP


  • Smart Buildings & Home Automation
  • Logistics and Supply Chain Management
  • Smart Agriculture
  • Smart Cities 

Temperature Sensor:

  • Range: -40 to + 80°C
  • Accurancy: ±0.2 @ 0-90 °C
  • Resolution: 0.01°C
  • Long Term Shift: <0.03 °C/yr

Humidity Sensor:

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

DataSheet, Document Base

User Manual -- Online Latest

Shared Folder for all Dragino Products