The Dragino LSN50v2-S31B 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 LSN50v2-S31B 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.

LSN50v2-S31B supports temperature and humidity alarm feature, user can get alarm for instant notice.

LSN50v2-S31B is powered by 8500mAh Li-SOCI2 battery, It is designed for long term use up to 10 years. (Actually Battery life depends on the use environment, update period.Please check related Power Analyze report).

Each LSN50v2-S31B is pre-load with a set of unique keys for LoRaWAN registration, register these keys to local LoRaWAN server and it will auto connect after power on.

Default FW in AS923, but it support US915, AU915 and all 900MHz Frequency by loading different FW, it could also support 868MHz if loading 868MHz FW, but there will be slight 0.5-1dB loss here.

Feature:

LoRaWAN v1.0.3 Class A
Ultra low power consumption
Measure range -40°C ~ 80°C
Temperature alarm
Bands: CN470/EU433/KR920/US915 EU868/AS923/AU915/IN865
AT Commands to change parameters
Uplink on periodically
Downlink to change configure

Applications:

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

Specifications:

Environment

Operating Temperature

-40 ~ 85°C

Storage Temperature

-40 ~ 85°C

Protection Level

IP66

Sensor accuracy

Temperature Sensor	Temperature range	-40 ~ 80°C
	Accuracy	±0.2 @ 0-90 °C.
	Resolution	0.1°C
	Long Term Shift	<0.03 °C/yr

Humidity Sensor	Humidity range	0 ~ 99.9% RH
	Accuracy	±0.5°C (max ±2.0 °C).
	Resolution	0.01% RH
	Long Term Shift	<0.25 %RH/yr

LoRaWAN frequency and Countries/Regions

Frequency	Status	Countries/Regions
EU868	OK	Europe and other
AU915, AS923	OK	Australia
		New Zealand
		Brunei
		Cambodia
		Hongkong
		Indonesia
		Japan
		Laos
		Singapore
		Taiwan
		Thailand
		Vietnam
CN470	OK	China
US915	OK	USA
KR920	OK	Korea

Datasheet: LSN50v2-S31B datasheet.pdf

Operation manual: LSN50v2-S31B User manual.pdf

Configure manual: LSN50v2-AT commands.pdf

Other documents: LSN50v2-Power Analyze.xlsx

Decorder: LSN50v2 decorder

LSN50v2-S31B - Dragino LoRaWAN Temperature & Humidity Sensor - SHT31 -40 to 80°C Outdoor