Flex2-nSens LWEU/LWNA temperature and humidity transmitter

The Flex2 series is a multipurpose weatherproof LoRaWAN transmitter series with several input options for various needs of industrial measurement and monitoring. The LoRaWAN radio offers a long range, especially outdoors, and connectivity to all standard LoRaWAN systems. Compare the Flex devices.

Flex2-nSens LWEU/LWNA measures temperature and humidity using a Novasina nSens probe. The probe needs to be ordered separately.

The device consists of three parts, a radio part, a measuring part, and a sensor.

Product code measuring part: 20642

Product code radio part Europe: 21607
Product code device without sensor Europe: 21481

Product code radio part USA and Canada: 20648
Product code device without sensor USA and Canada: 20662

Product code sensor: 20223

Ask for an offer
User manual


  • Operating temperature: -30…+60 °C
  • Operating humidity: 0-100 %RH
  • Protection class: IP65
  • Enclosure material: Plastic (PC+ABS)


  • Weight:
    Radio modules: 35g
    Measurement modules: 70g (slight variation between Flex2 models)
  • Dimensions: Width 60 mm, depth 32.5 mm, height: 292.8 mm (probe attached)
  • Cable gland: M12x1.5

Power supply

  • Batteries: 3.6V Lithium Thionyl battery pack
  • Typical battery life:
    With a good radio link and 5 min measurement interval, typically 5 years
    With an average radio link and 30 min measurement interval, typically 5 years
    With a bad radio link and 30 min measurement interval, typically 3 years

Measuring and data transmission

  • Measure interval: Configurable: 0…14400s
  • Radio: LoRa radio technology with Murata ABZ-093 LoRaWAN modem
  • Antenna: Internal
  • Frequency band: EU868: 863-870 MHz / US915: 902-928 MHz
  • Transmission power: Max +14 dBm E.R.P.
  • Range, line-of-sight: Depends on installation location and environment, in good conditions 10 km

nSens module

  • Sensor type: Novasina nSens-HT-EIS or nSens-HT-CSS, not supplied
  • Cable length: max 2 m
  • Measurement range: See Novasina’s documentation; max temperature 60 °C for the meas.module
  • Accuracy: See Novasina’s documentation