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S31B-LB LoRaWAN® Temperature & Humidity Sensor

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The Dragino S31B-LB LoRaWAN® Temperature & Humidity Sensor is a robust industrial IoT device engineered for precise environmental monitoring across India. Designed for long-range LoRaWAN® deployments, this temperature and humidity sensor measures ambient temperature and relative humidity accurately and transmits data securely to IoT servers via LPWAN networks. Powered by the high-reliability Sensirion SHT31 sensor housed in a waterproof anti-condensation casing, the S31B-LB ensures stable and long-term performance in demanding industrial and commercial environments. Supporting LoRaWAN® 1.0.3 Class A protocol, BLE configuration, and wireless OTA firmware updates, it simplifies deployment and maintenance. With an 8500mAh Li/SOCl2 battery offering up to 5 years of operation, the S31B-LB is ideal for utilities, infrastructure, and automation projects. AIoTkart®, as an Authorized Dragino Distributor in India, supplies genuine S31B-LB sensors for institutional and enterprise IoT applications.

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  • LoRaWAN® 1.0.3 Class A compliant
  • High-precision Sensirion SHT31 temperature & humidity sensor
  • IP66 waterproof enclosure for outdoor use
  • Ultra-low power consumption design
  • 8500mAh Li/SOCl2 battery (up to 5 years operation)
  • Temperature & humidity alarm alerts
  • Datalog feature for network outage backup
  • Bluetooth v5.1 configuration support
  • Remote configuration via LoRaWAN® downlink
  • Wireless OTA firmware updates
  • Supports IN865 and global LoRaWAN® frequency bands

Common DC Characteristics

  • Supply Voltage: Built-in battery, 2.5V ~ 3.6V
  • Operating Temperature: -40°C to 85°C

Temperature Sensor

  • Range: -40°C to +80°C
  • Accuracy: ±0.2°C (0–90°C)
  • Resolution: 0.1°C
  • Long-term shift: <0.03°C/year

Humidity Sensor

  • Range: 0 to 99.9% RH
  • Accuracy: ±2% RH
  • Resolution: 0.01% RH
  • Long-term shift: <0.25% RH/year

LoRa Specifications

  • Frequency Range (HF Band): 862 ~ 1020 MHz
  • Supported Bands: IN865, EU868, US915, AU915, AS923, KR920, EU433, CN470
  • Max +22 dBm RF output
  • RX Sensitivity: up to -139 dBm
  • High interference immunity

Battery

  • Type: Li/SOCl2 non-rechargeable battery
  • Capacity: 8500mAh
  • Self-discharge: <1% per year @ 25°C
  • Max continuous current: 130mA
  • Max boost current: 2A (1 second)

Power Consumption

  • Sleep Mode: 5uA @ 3.3V
  • LoRa Transmit Mode:
    • 125mA @ 20dBm
    • 82mA @ 14dBm

Mechanical

  • IP66 waterproof enclosure
  • Device Size: 120 × 55 × 200 mm
  • Device Weight: 370g

Package Includes

  • 1 × S31B-LB LoRaWAN® Temperature & Humidity Sensor

The Dragino S31B-LB LoRaWAN Temperature & Humidity Sensor is suitable for:

  • Industrial automation and environmental monitoring
  • Commercial building management systems
  • Water systems and pump stations
  • Cold chain storage and logistics monitoring
  • Manufacturing plant climate control
  • Utilities and smart metering infrastructure
  • Public infrastructure and smart city projects
  • Campuses, hospitals, and institutional facilities
  • Long-range irrigation systems

You can purchase the genuine Dragino S31B-LB LoRaWAN® Temperature & Humidity Sensor from AIoTkart®, an Authorized Dragino Distributor in India offering nationwide delivery and bulk supply support.

Yes, the S31B-LB supports IN865 and global LoRaWAN® frequency bands, features IP66 protection, and offers ultra-low power consumption, making it ideal for industrial, utility, and infrastructure monitoring applications.

Yes, the built-in datalog feature allows the S31B-LB to store temperature and humidity readings locally when LoRaWAN connectivity is unavailable and automatically transmit them once the network is restored.

Documents

S31B-LB_User_Manual

Download

S31B-LB_Datasheet 

Download

S31B-LB_Firmware 

Download

Why Buy Dragino & Industrial IoT Products from AIoTkart® in India?

AloTkart® is an Authorized Dragino Distributor in India, supplying genuine LoRaWAN® gateways, sensors, and Industrial lot devices with full warranty and technical support.

Authorized Dragino Distributor in India

Purchase 100% genuine Dragino LoRaWAN® gateways, nodes, and loT solutions backed by manufacturer warranty.

Guaranteed Genuine Industrial IoT Equipment

No gray market products - only certified Dragino and industrial-grade loT hardware.

Fast PAN-India Shipping

Reliable delivery across India for startups, system integrators, enterprises, and government projects.

LoRaWAN® Deployment & Technical Support

Expert guidance for LoRaWAN® network setup, gateway configuration, sensor integration, and industrial deployments.

Bulk Supply for Large-Scale Projects

Competitive pricing and assured stock for institutional, industrial, and system integration requirements.

Trusted Industrial IoT Supplier in India

Serving smart cities, utilities, agriculture, manufacturing, research institutions, and enterprise loT projects.

Buy Dragino in India with Confidence

Explore our range of LoRaWAN® gateways, sensors, and Industrial lot devices today.