S31B-LB LoRaWAN Temperature and Humidity Sensor Node 868MHz

The S31B-LB LoRa module is an 868 MHz Long Range LoRa sensor node for indoor and outdoor use. The S31B-LB uses a high-precision SHT31 temperature and humidity sensor from Sensirion. Thanks to its waterproof housing, the SHT31 is suitable for long-term outdoor use. This robust sensor node, packaged in a weatherproof housing, is ideal for outdoor use and is powered by an 8500mA Li/SOCl2 battery, ensuring a long operating duration. The S31B-LB is more than just a sensor node. It is designed to enable the quick implementation of industrial LoRa and IoT solutions. The wireless part of the node is based on the SX1262, allowing data transmission over very long distances at low data rates. This ensures an exceptionally wide range, high interference resistance, and optimizes power consumption. Equipped with a powerful 48 MHz ARM microcontroller, 256KB Flash, and 64KB RAM, the PS-LB-NA is prepared for all types of projects. The S31-LB has an integrated BLE module that allows convenient configuration of the sensor from your mobile phone. It also supports OTA updates via a private LoRa protocol, significantly simplifying maintenance. This sensor node is the third generation of the popular LSN50v2-S31B from Dragino and offers a mature LoRaWAN stack and application software. You can use the pre-installed software for your IoT projects or flexibly adapt the software to different requirements. 

Each sensor is preloaded with a set of unique keys for LoRaWAN registrations. These keys are registered on the local LoRaWAN server, and the sensor automatically connects when powered on if network coverage is available. 

Recommended Accessories:  

• Lora Gateway

Features: 

• High-precision SHT31 temperature and humidity sensor from Sensirion 
  
• LoRaWAN 1.0.3 Class A 
  
• SX1262 LoRa Core 
  
• Extremely low power consumption 
  
• Open-source hardware/software 
  
• Easy configuration with AT commands via Bluetooth V5.1, LoRaWAN Downlink, or UART 
  
• Support for wireless OTA firmware update 
  
• Periodic uplink function 
  
• Downlink to change the configuration 
  
• 8500mAh Li/SOCl2 battery for long operation 
  
• Waterproof according to IP65 
  
• Optimized housing with new pressure compensation vent 
  
• External LoRa antenna 

Main Applications of the S31B-LB: 

• Wireless alarm and security systems 
• Building automation 
• Industrial monitoring and control 

Links and Downloads: 

• Dragino Wiki

Technical Details: 

• Manufacturer: Dragino 
• Manufacturer SKU: S31B-LB-EU868 
• Microcontroller: 
• MCU: 48 MHz ARM 
• Flash: 256KB 
• RAM: 64KB 
• Supply voltage: 2.5V ~ 3.6V 
• Operating temperature: -40 ~ 85°C 
• LoRa Specifications: 
• Frequency range: 868MHz / EU868  
• Maximum +22 dBm constant RF output 
• RX sensitivity: up to -139 dBm 
• Excellent blocking immunity 
• Sensor:  
• Type: SHT31 
• Temperature sensor 
• Range: -40 to +80 °C. 
• Accuracy: ± 0.2 at 0-90 °C 
• Resolution: 0.01°C 
• Long-term drift: <0.03°C / year 
• Humidity sensor 
• Range: 0 to 99.9% RH 
• Accuracy: ± 2% RH 
• Resolution: 0.01% RH 
• Long-term drift: <0.25% RH / year 
• Battery: 
• Li/SOCI2 non-rechargeable battery 
• Capacity: 8500mAh 
• Self-discharge: <1% / year @ 25°C 
• Maximum continuous current: 130mA 
• Maximum peak current: 2A, 1 second 
• Power consumption: 
• Sleep mode: 5uA @ 3.3V 
• LoRa transmit mode: 125mA @ 20dBm, 82mA @ 14dBm 
• Dimensions: 144 x 78 x 51mm  
• Weight: 225g 

Scope of delivery: 

• 1x S31B-LB LoRaWAN Temperature and Humidity Sensor Node 868MHz   
• 1x External 868MHz Antenna