S31B-LS LoRaWAN Temperature & Humidity Sensor

The Dragino S31B-LS is a solar-powered LoRaWAN temperature and humidity sensor designed for accurate, long-term environmental monitoring. It uses the Sensirion SHT31 sensor to measure ambient temperature and relative humidity with high precision and stability. The sensor data is transmitted wirelessly over LoRaWAN to an IoT server, making it ideal for remote and outdoor deployments. With an IP66 waterproof enclosure, BLE configuration, datalogging, and OTA updates, S31B-LS ensures reliable operation even in harsh environments.

Key Specifications

• Protocol: LoRaWAN v1.0.3 Class A

• Sensor: Sensirion SHT31 (fully calibrated, temperature compensated)

• Temperature Range: –40°C to +80°C

• Temperature Accuracy: ±0.2°C (0–90°C)

• Humidity Range: 0–99.9% RH

• Humidity Accuracy: ±2% RH

• Resolution: 0.1°C (Temperature), 0.01% RH (Humidity)

• Power Supply: Solar panel + 3000mAh Li-ion battery

• Battery Life: Up to 5 years (typical)

• Enclosure: IP66 waterproof, anti-condensation sensor housing

• Configuration: Bluetooth v5.1 & LoRaWAN downlink

• Firmware: Wireless OTA update

• Frequency Bands: CN470 / EU433 / KR920 / US915 / EU868 / AS923 / AU915 / IN865

Applications

Environmental and weather monitoring, smart agriculture and irrigation systems, greenhouses, smart buildings, cold storage areas, industrial monitoring, and remote outdoor IoT deployments.

USER MANUAL:

S31B-LS_User_Manual

DATA SHEET:

S31B-LS_Datasheet

FIRMWARE:

S31B-LS_Firmware