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E+E Elektronik CO2, RH & Temperature Transmitter HVAC wall mount


EE800 measures accurately CO₂, temperature (T) and relative humidity (RH) in HVAC applications. Additionally, it calculates the dewpoint temperature (Td). The EE800 incorporates the E+E dual wavelength NDIR CO2 sensor, which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long-term stability.

  • CO2 Measuring range :0 – 2000 / 5000ppm.
  • Relative humidity range: 10 to 90% RH
  • Temperature range: -20 to 60°C
  • Dew point temperature: -30 to 55°C
  • Output: Analogue 0-10V, 4-20mA/Digital, Modbus RTU or BACnet MS/TP
  • Accuracy ±50ppm + 2% of measuring value, ±3% RH, ±0.3°C
  • Supply :24V AC/ 15-35 VDC

EE800 with analogue outputs features an optional passive T sensor, while EE800 with digital interface (Modbus RTU or BACnet MS/TP) calculates additional physical quantities: absolute humidity, mixing ratio, enthalpy, frost point temperature and water vapor partial pressure.

Key Features

  • CO₂, T, RH/Td in one room transmitter
  • BACnet, Modbus or analogue outputs
  • Auto-calibration for excellent long-term stability
  • Temperature compensation
  • Highly insensitive to pollution
  • Snap-on enclosure for easy installation
  • Optional display
  • Easy user configuration and adjustment


  • Demand controlled ventilation.
  • Heating, ventilation, and air conditioning
  • Building automation

Data Sheets

EE-800_data Sheet