S31-NB/S31B-NB – NB-IoT Temperature & Humidity Sensor – Dragino
 S31-NB / S31B-NB – NB-IoT Temperature & Humidity Sensor – Dragino
 General Description
 
Dragino's S31-NB and S31B-NB are temperature and humidity sensors designed for IoT applications using the NB-IoT network. Equipped with Sensirion's SHT31 digital sensor, these devices offer accurate and reliable measurements in an IP66-rated waterproof housing, ensuring optimal performance even in harsh outdoor environments. Powered by an 8500mAh Li-SOCI2 battery, they guarantee extended battery life, ideal for long-term installations without frequent maintenance.
 Targeted Applications
-  Smart buildings and home automation
 
-  Cold chain management and logistics
 
-  Smart agriculture and greenhouses
 
-  Smart cities and urban infrastructure
 
-  Outdoor environmental monitoring
 
 Highlights
-  Accurate and stable SHT31 sensor
 
-  IP66 waterproof enclosure for outdoor use
 
-  Battery life up to several years with 8500mAh battery
 
-  Support for MQTT, MQTTs, TCP, UDP protocols
 
     - Setup and OTA update via Bluetooth v5.1
 
-  Alarm function for temperature and humidity
 
-  Multiple samplings with a single transmission
 
-  Compatible with various IoT platforms
 
 Technical Specifications
|  General Characteristics | 
|  Operating temperature range | 
 -40 to +85°C | 
|  Food | 
 2.5V~3.6V (built-in Li-SOCI2 battery) | 
|  Battery capacity | 
 8500mAh | 
|  Autonomy | 
 Up to several years (depending on use) | 
|  Standby mode consumption | 
 10µA @ 3.3V | 
|  Consumption in transmission | 
 350mA @ 3.3V | 
|  Temperature Sensor | 
|  Kind | 
 Sensirion SHT31 | 
|  Measuring range | 
 -40 to +80°C | 
|  Precision | 
 ±0.2°C (0 to 90°C) | 
|  Resolution | 
 0.01°C | 
|  Long-term drift | 
 <0.03°C/year | 
|  Humidity Sensor | 
|  Measuring range | 
 0 to 99.9% RH | 
 
| Precision | 
 ±2% RH | 
|  Resolution | 
 0.01% RH | 
|  Long-term drift | 
 <0.25% RH/year | 
|  NB-IoT connectivity | 
|  Module | 
 Quectel BC660K-GL | 
|  Supported bands | 
 B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 | 
|  Communication protocols | 
 MQTT, MQTTs, TCP, UDP | 
|  Configuration | 
 Bluetooth v5.1, AT Commands | 
|  Firmware update | 
 OTA (Over-The-Air) | 
|  Physical Characteristics | 
|  Housing | 
 Waterproof IP66 | 
|  Dimensions | 
 Unspecified | 
|  Weight | 
 Unspecified | 
 Interfaces and Connectors
-  Nano SIM card slot (NB-IoT)
 
-  Bluetooth v5.1 interface for configuration and update
 
-  External connector for probe (S31-NB only)
 
-  External antenna for better reception
 
 Pack Contents
-  1 x S31-NB or S31B-NB Sensor
 
-  1 x External Antenna
 
-  1 x User Manual