Kombi-LWEU-RHT-CO2-TVOC-DP

Kombi-LWEU-RHT-CO2-TVOC-DP is a wireless multi-sensor transmitter for measuring indoor air quality.
Kombi-LWEU measures temperature, humidity, carbon dioxide content, total volatile organic compounds (TVOC) and pressure difference.

Kombi-LWEU uses the LoRaWAN network for data transmission.

Kombi series also includes a Sky series transmitter that uses  LoRa technology instead of LoRaWAN technology and works with our Cell-Sky base station.

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User Manual
Technical specifications
  • Operating temperature: -30…+60 °C
  • Storage temperature: -40…+80 °C, non-condensing, device without the batteries
  • Protection class: IP20
  • Enclosure material: plastic (ABS+PC)
  • Weight: about 180 g with the batteries
  • Dimensions: 75 mm (width), 48 mm (height), 105 mm (depth)
  • Radio: LoRa radio technology, Murata ABZ-093 LoRaWAN modem, internal antenna
  • Radio frequency: 863-870 MHz (LoRaWAN 1.0.2 EU band)
  • Transmitting power: max. +14 dBm E.R.P.
  • Open space range: about 10 km under favourable conditions
  • Battery: 3.6 V lithium thionyl (3xAA)
  • Battery life: Typically 5 years with a 30-minute transmission interval
  • External power source: Micro USB type B, 5 ±0.5 V, max of 200 mA

 

Measurement ranges and accuracies:
  • Temperature
    • Measuring range: -40…+125 °C
    • Accuracy: ±0.1 °C (+20…+60 °C)
  • Humidity
    • Measuring range: 0…100 %RH
    • Accuracy: ±2 %RH (+0…+80 °C, 0…100 %RH)
  • CO2
    • Measuring range: 400…5,000 ppm
    • Accuracy: ±45 ppm + 3 %rdg
  • TVOC
    • Measuring range: 0.3…30 ppm
    • Accuracy: ±15 ºC
  • Pressure difference
    • Measuring range: -125…+125 Pa
    • Accuracy: ±0.08 Pa +3 %rdg