The Dragino LSN50v2-D22 is a LoRaWAN Temperature Sensor for Internet of Things solution. It can be used to measure the temperature of air, liquid or object, and then upload to IoT server via LoRaWAN wireless protocol.
The temperature sensor used in LSN50v2-D22 can measure -55°C ~ 125°C with accuracy ±0.5°C (max ±2.0 °C). There are two sensor cable which are waterproof, moisture-proof and anti-rust for long-term usage.
LSN50v2-D22 supports temperature alarm feature, user can set temperature alarm for instant notice.
LSN50v2-D22 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 the related Power Analyze report).
Each LSN50v2-D22 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.
Features:
✓ LoRaWAN v1.0.3 Class A
✓ Ultra-low power consumption
✓ External DS18B20 Probe (default 2meters)
✓ Measure range -55°C ~ 125°C
✓ Temperature alarm
✓ Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
✓ AT Commands to change parameters
✓ Uplink on periodically or Interrupt
✓ Downlink to change configure
Specifications
Micro Controller:
➢ MCU: STM32L072CZT6
➢ Flash:192KB
➢ RAM:20KB
➢ EEPROM: 6KB
➢ 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 Spec:
➢ 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
Applications
✓ Wireless Alarm and Security Systems
✓ Home and Building Automation
✓ Industrial Monitoring and Control
✓ Long range Irrigation Systems.
Order Infor
LSN50v2-D22-XX:
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
Useful Link:
DataSheet
User Manual
Decoder
Firmware
Certificate
ER26500_Datasheet-EN.pdf
ER26500_SPC1520_Drawing.pdf
