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 has max 3 probes which measure maximum 3 temperature points.

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.

Features:

• 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
• Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
• 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

Applications: 

• Wireless Alarm and Security Systems
• Home and Building Automation
• Automated Meter Reading
• Industrial Monitoring and Control
• Long range Irrigation Systems,etc. 

Specifications:

Common DC Characteristics:

• Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~ 3.6v
• Operating Temperature: -40 ~ 85°C

Temperature Sensor:

• Range: -40 to + 80°C
• Accuracy: ±0.2 @ 0-90 °C
• Resolution: 0.1°C
• Long Term Shift: <0.03 °C/yr

Humidity Sensor: 

• Range: 0 ~ 99.9% RH
• Accuracy: ± 2%RH ( 0 ~ 100%RH)
• Resolution: 0.01% RH
• Long Term Shift: <0.25 %RH/yr

LoRa Spec:

• Frequency Range,  Band 1 (HF): 862 ~ 1020 Mhz
• Max +22 dBm constant RF output vs.
• RX sensitivity: down to -139 dBm.
• Excellent blocking immunity

Battery:

• Li/SOCI2 un-chargeable battery
• Capacity: 8500mAh
• Self-Discharge: <1% / Year @ 25°C
• Max continuously current: 130mA
• Max boost current: 2A, 1 second

Power Consumption:

• Sleep Mode: 5uA @ 3.3v
• LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

documents:

• DataSheet, Document Base
• User Manual -- Online Latest
• Shared Folder for all Dragino Products

Package Includes:

• 1 x S31B-LB LoRaWAN Temperature & Humidity Sensor