The QMX3.P37 is the top-tier KNX room operator in the QMX3 range, combining a segmented backlit LCD, configurable LED touchkeys, an NTC temperature sensor, and an integrated bus coupling unit in an 88.4 x 133.4 x 18 mm white housing. It operates at DC 21 V from the KNX bus, delivering numeric temperature readout and LED-confirmed touchkey status simultaneously.
PWM and PID algorithms cover heating, cooling, and combined modes with radiated and floor heating parameters. A label window enables custom scene naming. Three adjustable CO2 and humidity thresholds drive up to 3-stage fan and positioning outputs for full climate management.
| Protocol | KNX PL-Link / KNX S-Mode |
|---|---|
| Bus Coupling | Integrated |
| Operating Voltage | DC 21 V |
| Voltage Source | KNX Bus |
| Power Consumption | 0.24 W |
| Temperature Sensor | NTC, 0-50°C |
| Display | Segmented backlit LCD + LED |
| Touchkeys | Configurable with label window (switching, dimming, blind, scene) |
| Fan Control | 1/2/3-stage actuating variable |
| Positioning | 1/2/3-point signal (CO2, humidity) |
| Thresholds | 3 adjustable CO2 + 3 humidity switching values |
| Operating Modes | Comfort, Pre-Comfort, Energy Saving, Protection |
| Control Algorithm | PWM / PID modulating |
| Protection Rating | IP30 |