Müller KNX 24704 Ruimteklimaatregelaar met luchtkwaliteits-, temperatuur- en vochtigheidssensor GS 40.12 KNX

Room climate controller with integrated KNX bus connection that combines temperature, humidity and CO2 measurement in a single flush-mounted device. The controller regulates heating, cooling, ventilation and dehumidification using a PI algorithm, with two binary inputs for window contacts or presence detectors. Operating modes include Comfort, Standby, Night and Frost/Heat Protection. The device is powered directly from the KNX bus (21-30V DC) and consumes a maximum of 10 mA. Configuration requires ETS5 or higher. Integrated logic functions allow local automation without additional components.

Advantages

All-in-one sensor and controller reduces wiring and installation time. PI control ensures stable room temperature. CO2 measurement enables demand-based ventilation. Two binary inputs integrate window status or occupancy. Bus-powered design eliminates separate power supply.

Suitable for

• Residential and commercial buildings with KNX infrastructure
• Rooms requiring automatic climate control based on air quality
• Retrofit projects where flush-mounted devices are preferred
• Integration with window contacts or presence detectors

Key specifications

• Bus system: KNX
• Integrated sensors: Temperature, humidity, CO2
• Temperature measurement range: 0 to +50 °C
• Humidity measurement range: 0 to 100 % RH
• CO2 measurement range: 0 to 2000 ppm
• Control functions: Heating, cooling, ventilation, dehumidification
• Control type: PI controller (1-stage / 2-stage)
• Operating modes: Comfort, Standby, Night, Frost/Heat Protection
• Binary inputs: 2
• Current consumption: Max. 10 mA
• Mounting: Flush-mounted
• Colour: White

Recommendations

For KNX projects requiring a compact room controller with air quality monitoring, this device offers precise measurement and flexible control. Ensure ETS5 or higher is available for commissioning. The flush-mounted design fits standard switch boxes, making it suitable for new installations and retrofits.