Dragino S31 Temperature & Humidity Sensor with External Probe (LoRaWAN, NB-IoT & LTE-M)

S31-xx
S31-xx S31-xB S31-xS

Dragino S31 Temperature & Humidity Sensor

The Dragino S31 is a temperature and humidity sensor featuring a remote cabled probe, allowing measurements to be taken away from the device enclosure. This design is well suited to installations such as cabinets, equipment housings, ducts, and other locations where the sensing point cannot be fixed directly to the device body. The S31 supports LoRaWAN, NB-IoT and LTE-M networks.

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SKU: S31-XX
Manufacturer: Dragino
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  • Device Only
    Device Only
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  • Plug-and-Play Configuration [+$300-]
    Plug-and-Play Configuration [+$300-]
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  • 12 Month Platform Subscription - 1-Month Storage [+$40-]
    12 Month Platform Subscription - 1-Month Storage [+$40-]
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  • 12 Month Platform Subscription - 3-Months Storage [+$60-]
    12 Month Platform Subscription - 3-Months Storage [+$60-]
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  • 12 Month Platform Subscription - 12-Months Storage [+$100-]
    12 Month Platform Subscription - 12-Months Storage [+$100-]
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***More Details

  • No SIM Card
    No SIM Card
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  • 1NCE SIM IoT Card [+$80-]
    1NCE SIM IoT Card [+$80-]
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  • SIMBASE IoT SIM Card [+$80-]
    SIMBASE IoT SIM Card [+$80-]
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  • Telstra NB-IoT SIM Card [+$80-]
    Telstra NB-IoT SIM Card [+$80-]
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$195- +GST
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Dragino S31 Temperature & Humidity Sensor with External Probe (LoRaWAN, NB-IoT & LTE-M)

 

The Dragino S31 is a temperature and humidity sensor designed for installations where the sensing point needs to be positioned away from the main device. Using a cabled external probe, the S31 allows measurements to be taken inside cabinets, ducts, enclosures, or confined spaces while the device body remains mounted externally.

Flexible Monitoring Locations The external probe design makes the S31 suitable for applications where direct mounting of a sensor body is impractical or undesirable. This approach helps protect the device electronics while still delivering reliable temperature and humidity readings from the target environment.

Multi-Network Connectivity The S31 platform is available in variants supporting LoRaWAN, NB-IoT, and LTE-M. This allows the same sensor family to be deployed across private LoRaWAN networks or carrier-operated cellular networks, depending on site requirements and coverage.

Power Options for Long-Term Use Battery-powered and solar-powered variants are available, supporting long-term unattended monitoring. These options make the S31 suitable for both indoor and outdoor deployments where regular maintenance access may be limited.

Enhanced Functionality with Telemetry2U Integration While the Dragino S31 can be connected to compatible third-party platforms, Telemetry2U is the recommended option for customers seeking a supported, end-to-end monitoring solution. Integration with the Telemetry2U IoT platform enables dashboards, historical data storage, alerts, and device management in a single interface.

 

 

Choose Wireless Network

S31-LB LoRaWAN model with battery power, designed for remote temperature and humidity monitoring using an external probe.
S31-LS LoRaWAN model with solar power option for low-maintenance outdoor or semi-outdoor installations.
S31-NB NB-IoT only model with battery power for carrier network coverage and deep indoor penetration.
S31-NS NB-IoT only model with solar power option for long-term deployments.
S31-CB Dual-mode LTE-M and NB-IoT model with battery power for broader cellular coverage and mobile-friendly use cases.
S31-CS Dual-mode LTE-M and NB-IoT model with solar power option for low-maintenance deployments.

 

 

Combine Your Device with the Telemetry2U IoT Platform

 

 

Combine your Dragino device with the Telemetry2U IoT platform to centralise monitoring, alerts, and device management. Telemetry2U helps turn sensor data into usable insights through clear dashboards, configurable notifications, and practical tools to support ongoing operations.

Telemetry2U IoT Platform Features
Telemetry2U IoT Platform Overview

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

See how easy it is to add your own Dragino devices to Telemetry2U

Attribute name Attribute value
Specifications

Common Features:

  • External temperature and humidity probe (wired sensor)
  • Temperature and humidity monitoring using high accuracy digital sensor
  • Temperature alarm and humidity alarm support
  • Data logging when network is unavailable
  • Ultra-low power consumption design
  • Uplink on periodically or on alarm event
  • Downlink to change configuration parameters
  • Monitor battery level remotely
  • Support Bluetooth (BLE) remote configuration and wireless OTA firmware update
  • IP66 waterproof enclosure for outdoor deployment
  • Battery powered operation: 8500mAh Li/SOCl2 (non-rechargeable)
  • Optional solar powered version with rechargeable battery

 

Network Specific Features and Specifications (LoRaWAN – S31-LB / S31-LS):

  • LoRaWAN 1.0.3 Class A compliant
  • LoRaWAN frequency plans supported: EU433 / EU868 / KR920 / US915 / AU915 / AS923 / IN865 / CN470
  • LoRa frequency range: 862 to 1020MHz
  • LoRa receiver sensitivity: down to -139dBm
  • Max RF output: +22dBm
  • Power consumption: Sleep mode ~5uA at 3.3V

 

Network Specific Features and Specifications (NB-IoT – S31-NB / S31-NS):

  • NB-IoT (CAT-NB2) cellular connectivity
  • Uplink via MQTT, MQTTs, TCP, UDP or CoAP
  • Nano SIM card slot
  • NB-IoT Bands: B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B17 / B18 / B19 / B20 / B25 / B28 / B66 / B70 / B85

 

Network Specific Features and Specifications (LTE-M – S31-CB / S31-CS):

  • Dual-mode LTE-M (CAT-M1) and NB-IoT cellular connectivity
  • Uplink via MQTT, MQTTs, TCP, UDP or CoAP
  • Nano SIM card slot
  • LTE-M Bands: B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B26 / B27 / B28 / B66 / B85
  • NB-IoT Bands: B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B28 / B66 / B71 / B85




Common Specifications:

  • Temperature measurement range: -40C to +80C
  • Temperature accuracy: +/-0.2C (typical)
  • Temperature resolution: 0.01C
  • Humidity measurement range: 0 to 99.9% RH
  • Humidity accuracy: +/-2% RH
  • Humidity resolution: 0.01% RH
  • Sensor type: External digital temperature and humidity probe
  • Operating temperature: -40C to +85C
  • Supply voltage (internal): 2.5V to 3.6V
  • Battery capacity: 8500mAh Li/SOCl2
  • Battery self-discharge: <1% per year at 25C




Applications:

  • Cold room and freezer monitoring
  • Warehouse temperature and humidity monitoring
  • Greenhouse and agriculture monitoring
  • Environmental monitoring stations
  • Food storage and transport monitoring
  • Industrial temperature and humidity monitoring




Package Includes:

  • S31 Temperature and Humidity Sensor x 1
  • External temperature and humidity probe x 1
  • External antenna x 1

Dimensions and Weight – Battery Version:

  • Package Size / pcs: 170*80*55 mm
  • Weight / pcs: 250 g

Dimensions and Weight – Solar Version:

  • Package Size / pcs:
  • Weight / pcs:
Documents

DataSheet, Document Base

User Manual -- Online Latest

Shared Folder for all Dragino Products