CO2, temperature and humidity room sensor - EE800

The EE800 is optimized for demand controlled ventilation and building automation in residential and commercial applications.

  • Model Number: EE800
  • Data Sheet: Date Sheet File
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  • CO2, temperature and humidity room sensor
  • CO2, temperature and humidity room sensor
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Product Specification

The EE800 is optimized for demand controlled ventilation and building automation in residential and commercial applications.



The EE800 combines CO2, temperature (T) and relative humidity (RH) measurement in one device with modern design. Additionally, it calculates the dew point temperature (Td).


Outstanding Measurement Performance

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. A multiple point CO2 and T factory adjustment procedure leads to excellent CO2 measurement accuracy over the entire T working range.


Analogue and Passive Outputs, Digital interface, Display

EE800 with analogue outputs features an optional passive T sensor, while at EE800 with RS485 additional physical quantities are available on the Modbus RTU and BACnet MS/TP interface:absolute humidity, mixing ratio, enthalpy, frost point temperature and water vapor partial pressure.


Easy Installation and Maintenance

The EE800 enclosure is available in several colours and in two sizes according to regional standards. The snap-on design facilitates the replacement of the active front part within seconds

while the wiring remains intact. Furthermore, it makes possible to wire the device without exposing the electronics to construction site pollution.


Configurable and Adjustable

An optional USB configuration adapter and the free EE-PCS Product Configuration Software facilitate easy setup and adjustment of EE800.


CO2, temperature and humidity room sensor Technical Data:



Measurement principle

Dual Wavelength Non-Dispersive Infrared Technology (NDIR)

Working range

0...2000 / 5000 ppm

Accuracy at 25℃ (77 °F)

and 1013 mbar

0..2000 ppm: < ± (50 ppm +2 % of measuring value)

0...5000 ppm: < ± (50 ppm +3 % of measuring value)

Response time τ63

typ. 110 s

Temperature dependence

typ. ± (1 + CO2 concentration [ppm] / 1000) ppm/℃ (-20...45℃) (-4...113 °F)

Calibration interval1)

>5 years


Accuracy2) at 20℃ (68 °F)

±0.3℃ (±0.54 °F) RS485 interface or voltage output

±0.7℃ (±1.26 °F) current output

Relative humidity

Working range

10...90 % RH

Accuracy at 20 (68 °F)

±3 % RH (30...70 % RH) ±5 % (10...90 % RH)

Dew point temperature3)

Working range

-30...55 (-22...131 °F)


< ±2 ℃ (3.6 °F) for |T| - |Td| < 25 ℃ (45 °F)

< ±3 ℃ (5.4 °F) for |T| - |Td| < 30℃ (54 °F)

1) Under normal operating conditions.

2) For supply voltage 24 V DC. Load resistor 250 Ω for version with current output

3) Additional calculated physical quantities available only on the Modbus and BACnet interface: absolute humidity, mixing ratio, enthalpy,frost point temperature and water vapor partial pressure.



0...2000 / 5000 ppm

0-5 V / 0-10 V   -1 mA < IL < 1 mA

4-20 mA    RL < 500 Ohm

Digital interface

RS485 with max. 32 unit load devices on one bus


Modbus RTU or BACnet MS/TP

Temperature passive

according to ordering guide


Supply voltage

24 V AC ±20 % 15-35 V DC

Current consumption




typ. 14 mA + output current; peak 0.3 A for 0.3 s

bias: typ. 11 mA at 15…35 V DC

        typ. 30 mA at 24 V AC ±20 %

peak: 150 mA at 15…35 V DC, 24 V AC ±20 %

Enclosure (polycarbonate)

US Version: UL94V-0 approved / EU Version: UL94HB approved

Protection class



LC display: alternating CO2 / T / RH or Td

Electrical connection

screw terminals max. 1.5 mm2 (AWG16)

Electromagnetic compatibility

EN61326-1   EN61326-2-3

FCC Part 15   ICES-003 ClassB

Test report

according to DIN EN10204 - 2.2

Working / storage T-range

0...90 % RH (non condensing) / -20...60 (-4...140 °F)

4) Analogue outputs: The display shows the physical quantities selected for the outputs.

Digital interface: The display shows CO2 and T for Model M11 and CO2, T, and RH for Model M12

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