The Dragino S31-LB is a LoRaWAN-enabled temperature and humidity sensor designed for long-range IoT monitoring applications. It precisely measures environmental temperature and relative humidity and transmits data wirelessly via the LoRaWAN protocol to IoT servers, enabling reliable environmental monitoring with minimal power consumption.

At its core, S31-LB uses a Sensirion SHT31 digital sensor, fully calibrated, linearized, and temperature-compensated, mounted in a waterproof anti-condensation enclosure for enhanced durability and long-term stability. This makes it ideal for outdoor and industrial deployments.

The LoRaWAN communication module delivers ultra-long range connectivity with strong interference immunity while minimizing energy usage. The sensor supports temperature and humidity alarms, datalogging when network availability is lost, and BLE provisioning and OTA firmware updates to simplify configuration and maintenance.

Powered by a long-life 8500 mAh Li-SOCl₂ battery designed for up to five years of operation, S31-LB is suitable for long-term, low-maintenance deployments. Each unit comes pre-loaded with unique LoRaWAN keys for easy network registration and automatic connection upon power-up.