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