The Dragino S31B-LB is a LoRaWAN Temperature and Humidity Sensor for Internet of Things solution. It is used to measure the surrounding environment temperature and relative air humidity precisely, and then upload to IoT server via LoRaWAN wireless protocol.
The temperature & humidity sensor used in S31B-LB is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a waterproof anti-condensation casing for long term use.
The LoRa wireless technology used in S31B-LB allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
S31B-LB supports Temperature & Humdity alarm feature, user can set temperature alarm for instant notice. S31B-LB supports Datalog feature, it can save the data when there is no LoRaWAN network and uplink when network recover.
S31B-LB supports BLE configure and wireless OTA update which make user easy to use.
S31B-LB is powered by 8500mAh Li-SOCI2 battery, it is designed for long term use up to 5 years.
Each S31B-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
LoRaWAN 1.0.3 Class A
Ultra-low power consumption
External 3 meters SHT31 probe (For S31-LB)
Measure range -55°C ~ 125°C
Temperature & Humidity alarm
Support Bluetooth v5.1 and LoRaWAN remote configure
Support wireless OTA update firmware
Uplink on periodically
Downlink to change configure
IP66 Waterproof Enclosure
8500mAh Battery for long term use.
Common DC Characteristics:
Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~ 3.6v
Operating Temperature: -40 ~ 85°C
Range: -40 to + 80°C
Accuracy: ±0.2 @ 0-90 °C
Long Term Shift: <0.03 °C/yr
Range: 0 ~ 99.9% RH
Accuracy: ± 2%RH ( 0 ~ 100%RH)
Resolution: 0.01% RH
Long Term Shift: <0.25 %RH/yr
Frequency Range, Band 1 (HF): 862 ~ 1020 Mhz
Max +22 dBm constant RF output vs.
RX sensitivity: down to -139 dBm.
Excellent blocking immunity
Li/SOCI2 un-chargeable battery
Self-Discharge: <1% / Year @ 25°C
Max continuously current: 130mA
Max boost current: 2A, 1 second
Sleep Mode: 5uA @ 3.3v
LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
Wireless Alarm and Security Systems
Home and Building Automation
Automated Meter Reading
Industrial Monitoring and Control
Long range Irrigation Systems,etc.
XX: the default frequency band
EU433: Default frequency band EU433
CN470: Default frequency band CN470
EU868: Default frequency band EU868
IN865: Default frequency band IN865
KR920: Default frequency band KR920
AS923: Default frequency band AS923
AU915: Default frequency band AU915
US915: Default frequency band US915
KZ865: Default frequency band KZ865
1 x S31B-LB LoRaWAN Temperature & Humidity Sensor
Dimension and weight:
Device Size: 120 * 55 * 200 mm
Device Weight: 370g