S31-LB/LS – LoRaWAN Temperature & Humidity Sensor – Dragino
 General Description
 Dragino 's S31-LB/LS is a LoRaWAN sensor designed to accurately measure ambient temperature and humidity. It uses the Sensirion SHT31 sensor, known for its reliability, factory calibration, and long-term stability. With an IP66 waterproof housing, this sensor is suitable for demanding outdoor environments.
 The S31-LB runs on an 8500mAh Li-SOCI2 battery, while the S31-LS version is equipped with a solar panel with a 3000mAh Li-ion battery . Long-range LoRaWAN connectivity and low power consumption ensure years of battery life. It also supports Bluetooth setup and OTA updates.
 Targeted Applications
-  Outdoor environmental monitoring
 
-  Building automation and home automation
 
-  Smart irrigation management
 
-  Remote meter readings
 
-  Industrial surveillance
 
 Highlights
-  
SHT31 probe : calibrated, linearized and compensated
 
- 
 Long battery life : up to 5 years
 
- 
 IP66 housing : waterproof and anti-condensation
 
- 
 Data Logging : Offline Backup
 
- 
 Built-in alarm : configurable temperature and humidity thresholds
 
- 
 BLE configuration and OTA firmware update
 
 Technical Specifications 
|  Characteristic | 
 Value | 
|  Temperature
 | 
 Range: -40 to +80°C  Resolution: 0.1°C  Accuracy: ±0.2°C (0-90°C)  Drift: < 0.03°C/year | 
|  Humidity
 | 
 Range: 0 to 99.9%RH  Resolution: 0.01%RH  Accuracy: ±2%RH  Drift: < 0.25%RH/year | 
|  LoRaWAN Frequencies
 | 
 CN470, EU433, KR920, US915, EU868, AS923, AU915, IN865 | 
|  Protocol
 | 
 LoRaWAN v1.0.3 Class A | 
|  Food
 | 
 Li-SOCI2 8500 mAh battery (S31-LB) or solar panel + Li-ion 3000 mAh battery (S31-LS) | 
|  Consumption
 | 
 Standby: 5 µA  Transmission: 125 mA @ 20 dBm | 
 | Operating temperature | 
 -40 to +85°C | 
|  RX sensitivity
 | 
 Up to -139 dBm | 
|  Transmit power
 | 
 Up to +22 dBm | 
 Interfaces and Connectors
-  LoRaWAN radio interface
 
-  Bluetooth v5.1 for local configuration
 
-  Firmware update via OTA
 
-  3 meter external probe for S31-LB
 
 Pack Contents
-  1 x S31-LB or S31-LS Sensor
 
-  1 x Integrated battery depending on version