KNX combined controllers and sensors from Siemens
The QMX3 range of mounted controllers offers a combined sensor and controller in an easily installed wall-mounted device. The devices include temperature, CO2 and humidity sensors as well as integrated PID controllers to control these measured variables. Some units have an LCD display.
Versions with a CO2 sensor can display the actual air-quality status via a colour-change LED or on the LCD. Lighting and blinds can also be controlled from the same unit, so no additional devices are required for total room automation control.
The-wall mounted option means installation is not dependent on any given wall box. The units use the KNX open communication protocol.