High-Precision Pressure / Liquid Level and Temperature Sensor for LoRaWAN®

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The device DL-PR36 enables remote monitoring of water level in open water, fill level of tanks, groundwater level and various other applications. It measures the pressure at the sensor head relative to the pressure at the cable end (device enclosure). When the sensor head is placed under water (or any other liquid), the relative pressure indicates the depth of the sensor head. In water, the relative pressure of 1 bar equals to a depth of approximately 10 m. Also available on request is a variant of the DL-PR36 which measures the absolute pressure at the sensor head, i.e., the pressure relative to zero bar (vacuum).
The device also reports the temperature of the sensor head with high precision. The temperature reading is also used internally for temperature compensation.
Sensor data are transmitted in real-time using LoRaWAN® radio technology. LoRaWAN® enables encrypted radio transmissions over long distances while consuming very little power. The user can obtain sensor data through Decentlab’s data storage and visualization system, or through the user's own infrastructure.

Visit www.decentlab.com for more information about Decentlab's data cloud service.


  • Level / depth in tanks for liquids
  • Boreholes
  • Groundwater and wells
  • Running or open water level and quality
  • Salinity and chloride monitoring
# End Device
# EU 863-870



  • Piezoresistive transducer
  • Range: 0 … 1 bar, relative (other ranges on request)
  • Linearity / precision: max. ±0.02% of full scale
  • Total error band: max. ±0.1% of full scale


  • Range: -40 ... +125 °C
  • Accuracy: max. ±0.1 °C

Technical details

  • LoRaWAN™ class A
  • 2 C alkaline batteries
  • 13.5 cm × 8.1 cm × 7 cm (not including sensor / cable)
  • 10 m cable
  • Reference DL-PR36

Datasheet and decoder on www.decentlab.com/support

DL-PR36's Distributors

Decentlab GmbH