Siemens QMX3.P74 Room Operator Unit - Temperature/Humidity/CO2 Sensor - Untested - AS-IS

Siemens QMX3.P74 Room operator unit. Out of box, never used. Untested, sold AS-IS. Priced online at $430, now offered at $130 OBO.

Functions: Multisensor for temperature, humidity, and CO2. Segmented backlit display and touchkeys. 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.

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