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N95S31B SHT31 NB-IoT Outdoor Temperature and Humidity Sensor


The N95S31B  SHT31 NB-IoT Outdoor Temperature and Humidity Sensor be used to measure the surrounding environment temperature and relative air humidity for  IoT solution.

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The Dragino N95S31 is a NB-IoT Temperature and Humidity Sensor for Internet of Things solution. It is used to measure the surrounding environment temperature and relative air humidity precisely, and then upload to IoT server via NB-IoT network.

The temperature & humidity sensor used in N95S31 is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability.  The SHT31 is fixed in a waterproof anti-condensation casing for long term use.

N95S31B supports different uplink methods include TCP, MQTT, UDP and CoAP for different application requirement.

N95S31 is powered by 8500mAh Li-SOCI2 battery, It is designed for long term use up to several years. (Real-world battery life depends on the use environment, update period. Please check related Power Analyze report). 


NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD

Monitor Temperature & Humidity via SHT31

AT Commands to change parameters

Uplink on periodically

Downlink to change configure

IP66 Waterproof Enclosure

Ultra-Low Power consumption

AT Commands to change parameters

Micro SIM card slot for NB-IoT SIM

8500mAh Battery for long term use


Smart Buildings & Home Automation

Logistics and Supply Chain Management

Smart Metering

Smart Agriculture

Smart Cities

Smart Factory

NB-IoT Spec

  • Module: Quectel BC35-G
  • Support Bands
    • - B1 @H-FDD: 2100MHz
    • - B3 @H-FDD: 1800MHz
    • - B8 @H-FDD: 900MHz
    • - B5 @H-FDD: 850MHz
    • - B20 @H-FDD: 800MHz
    • - B28 @H-FDD: 700MHz
  • Protocol: CoAP, UDP, MQTT

MCU Spec

  • MCU: STM32L072CZT6
  • Flash:192KB
  • SRAM:20KB
  • Clock Speed: 32Mhz

Common DC Characteristics:

Power Consumption:

STOP Mode: 10 μA @ 3.3v

See Power Analyze Document for more.


Li/SOCI2 unchargable battery

Capacity: 8500mAh

Self Discharge: <1% / Year @ 25°C

Max continuously current: 500mA

Max boost current: 2A, 1 second

Package Includes:

1 x N95S31B  NB-IoT Sensor Node

1 x External NB-IoT antenna


Device Size: Device Size: 10 x 4.0 x 4.2 cm


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