QMX3.P74-1BSC Siemens Thermostat

Room temperature, humidity, and CO2 sensor, LCD display and non-configurable touch keys. For use with DXR Series Controllers. Black housing.

Additional functionalities GAMMA

• Temperature control, adjustable as PWM control and/or modulating control (PID algorithm), for pure heating mode, pure cooling mode, heating and cooling mode
• Operating modes switchable via KNX and/or display: Comfort mode, Pre-Comfort, energy savings and protection mode
• Adjustable commissioning and control parameters for radiated heating, slow and fast, floor heating slow and fast
• Integrated bus coupling unit
• 3 independently adjustable switching values for CO2 concentration and relative air humidity for air quality control
• Actuating variable for 1, 2, or 3-stage fans (humidity and CO2)
• Actuating variable for 1, 2, or 3-point positioning signal (humidity and CO2)
• Setpoint for room temperature and relative humidity and CO2 concentration adjustable via KNX

Technical Specifications

Analog outputs	PL-Link output for use with DXR controllers
Communication	For use with DXR controller only
Display	Full HMI
Measurement accuracy	Temperature: +/-0.36°F @ 77°F, , Humidity: +/-4% RH at 77°F, , Air Quality: +/-30 ppm + 4% of measured value
Measuring range	Temperature: 32 to 122°F, , Humidity: 10 to 95% RH, , Air Quality: 400 to 10000 ppm
Measuring range, temperature	0…50 °C
Mounting	Wall-mounting
Operating voltage	Powered over PL-Link bus
Sensing element	Temperature sensor, CO2 sensor, relative humidity sensor
Sensing element, temperature	NTC
Voltage supply	KNX bus
Sensing element	Temperature sensor, CO2 sensor, relative humidity sensor
Color	Black
Degree of protection	IP30