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