KNX AQS/TH-B-UP (discontinued item)

KNX Sensor CO2, Temp., Humidity; Display/Buttons

Replacement: KNX AQS/TH-UP Touch

The Sensor KNX AQS/TH-B-UP measures CO2 concentration, temperature and humidity and calculates the dew point. The sensor can receive external measured values via the bus and process them with the own data to overall vealues (mixed values, e. g. room average). The KNX AQS/TH-B-UP offers two push buttons that may be used for changing the ambient temperature (target value), for switching between operating modes or as free programmable bus push buttons.

The KNX AQS/TH-B-UP provides switching outputs with adjustable threshold values. The switching outputs and further communication objects can be linked by AND and OR logic gates. Additionally, an integrated actuating variable comparator can compare and output values that are received via communication objects.
Integrated PI controllers allows for control of a ventilation (depending on CO2 concentration and air humidity) and a heating/cooling system (depending on temperature). The KNX AQS/TH-B-UP can can emit a warning to the bus as soon as the area of optimum comfort (according to DIN 1946) is left.

The integrated display shows the own values and data received from the bus (e. g. date, time). The housing is completed with a frame of the switching series installed in the building and thus merges with the interior.


N° 70240 KNX AQS/TH-B-UP, alu (discontinued item)

  • KNX AQS/TH-B-UP, alu (70240) KNX AQS/TH-B-UP, alu (70240)
  • KNX AQS/TH-B-UP, anthracite (70241) KNX AQS/TH-B-UP, anthracite (70241)
  • Measurement of CO2 concentration of the air, of temperature and air humidity (absolute and relative), calculation of the dew point
  • Mixed values from own measured values and external values (proportions can be set in percentage)
  • Display 1-3 rows (own values or values received from the bus) or display of temperature control
  • 2 push buttons. Configuration as bus push button or for changing ambient temperature and switching between operating modes
  • PI controller for heating (one or two step) and cooling (one or two step) depending on temperature. Control according to separate target values or basic target temperature 
  • PI controller for ventilation depending on humidity and CO2 concentration: dehumidification/humidification (one step) or dehumidification (one or two step)
  • 6 threshold values can be adjusted per parameter or via communication objects
  • 8 AND and 8 OR logic gates with each 4 inputs. Every switching incident as well as 8 logic inputs in the form of communication objects, may be used as inputs for the logic gates. The output of each gate may optionally be configured as 1 bit or 2 x 8 bits
  • 2 actuating variable comparators for output of minimum, maximum or average values. Each with 5 inputs (for values received via communication objects)
  • Configuration is made using the KNX software ETS
Housing Plastic material (partly lacquered)
Colours White glossy (similar to RAL 9016 Traffic White)
Aluminium matt
Anthracite matt
Special colours on request
Mounting In-wall (in socket Ø 60 mm, 42 mm deep)
Protection category IP 20
Dimensions Housing approx. 55 x 55 (W x H, mm),
mounting depth approx. 15 mm,
base plate approx. 71 x 71 (W x H, mm)
Total weight approx. 72 g
Ambient temperature Operation 0…+50°C, storage -10…+60°C
Ambient air humidity max. 95% RH, avoid bedewing
Operating voltage KNX bus voltage
Bus current max. 10 mA
Data output KNX +/- bus terminal plug
Communication objects 253
CO2 measurement range 0...2000 ppm
Temperature measurement range0…+50°C
Humidity measurement range 0% RH … 95% RH