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LSN50 v2 D20 LoraWAN Outdoor Temperature Sensor

LSN50 v2 D20 LoraWAN Outdoor Temperature Sensor


The Dragino LSN50 v2 D20 is a LoRaWAN Outdoor Temperature Sensor for Internet of Things solutions. It can be used to measure the temperature of air, liquid or other objects. It can be configured to uplink the data at user defined intervals, via a LoRaWAN gateway, to any IoT server via the LoRaWAN wireless protocol. The sensor also have a configurable alarm value that can cause an immediate uplink to be sent.

Each LSN50 v2 D20 is pre-loaded with a set of unique keys for LoRaWAN registration. Register these keys to any LoRaWAN server and the sensor will auto connect after power on.

SKU: LSN50 v2 D20 Categories: , ,

Product Description

The temperature sensor used in the LSN50 v2 D20 is the MAXIM DS18B20, which can measure -55°C ~ 125°C with accuracy ±0.5°C (max ±2.0 °C). The sensor cable is made of a Silica Gel, and the connection between metal probe and cable is double compressed to make it waterproof, moisture-proof, and anti-rust for long term usage.

The LSN50 v2 D20 supports a temperature alarm feature, allowing the user to set a temperature alarm for immediate notification.

The LSN50 v2 D20 is powered by an 8500mAh Li-SOCI2 battery. It is designed for long term use up to 10 years. (Battery life depends on the usage environment and update period. Please check the related Power Analysis report)


  • LoRaWAN v1.0.3 Class A
  • Ultra low power consumption
  • External DS18B20 Probe (default 2 meters)
  • Measurement Range: -55°C ~ 125°C
  • Temperature Alarm
  • Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
  • AT Commands to change parameters
  • Uplink periodically or by Interrupt
  • Downlink to change configuration


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

Micro Controller:

  • MCU: STM32L072CZT6
  • Flash:192KB
  • RAM:20KB
  • Clock Speed: 32Mhz

Common DC Characteristics:

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

Temperature Sensor:

  • Range: -55 to + 125°C
  • Accuracy ±0.5°C (max ±2.0 °C)

LoRa Specifications:

  • Frequency Range: Band 1 (HF): 862 ~ 1020 Mhz
  • 168 dB maximum link budget
  • High sensitivity: down to -148 dBm
  • Bullet-proof front end: IIP3 = -12.5 dBm
  • Excellent blocking immunity
  • Built-in bit synchronizer for clock recovery
  • Preamble detection
  • 127 dB Dynamic Range RSSI
  • Automatic RF Sense and CAD with ultra-fast AFC
  • LoRaWAN 1.0.3 Specification

Power Consumption

  • Sleeping Mode: 20uA
  • LoRaWAN Transmit Mode: 125mA @ 20dBm 44mA @ 14dBm

Additional Information

Weight .6 lbs
Dimensions 5.75 × 4 × 2 in

EU433, CN470, EU868, IN865, KR920, AS923, AU915, US915

Salt Lake City Office

Wovyn, L.L.C.
175 West 200 South
Suite #100 (Garden Level)
Salt Lake City, UT 84101