Siemens Room Operator Unit 133.4 mm 88.4 mm
- RS Stock No.:
- 287-8866
- Mfr. Part No.:
- QMX3.P74 / S55624-H106
- Manufacturer:
- Siemens
Subtotal (1 unit)*
SGD1,204.62
(exc. GST)
SGD1,313.04
(inc. GST)
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Stocked by manufacturer
- Ready to ship from 30 November 2026
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Units | Per unit |
|---|---|
| 1 + | SGD1,204.62 |
*price indicative
- RS Stock No.:
- 287-8866
- Mfr. Part No.:
- QMX3.P74 / S55624-H106
- Manufacturer:
- Siemens
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Device Type | Room Operator Unit | |
| Product Type | Room Device | |
| Height | 133.4mm | |
| Length | 88.4mm | |
| Width | 133.4mm | |
| Minimum Operating Temperature | 0°C | |
| Standards/Approvals | No | |
| Series | QMX3 | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Device Type Room Operator Unit | ||
Product Type Room Device | ||
Height 133.4mm | ||
Length 88.4mm | ||
Width 133.4mm | ||
Minimum Operating Temperature 0°C | ||
Standards/Approvals No | ||
Series QMX3 | ||
RoHS Status: Not Applicable
- COO (Country of Origin):
- CN
Siemens QMX3 Series Room Device, 0 to 50°C Operating Temperature, IP30 - QMX3.P74 / S55624-H106
This room device is a wall-mounted room operator unit designed for building automation environments using KNX PL-Link, KNX S‑mode or KNX LTE‑Mode. It measures and displays room conditions such as temperature, humidity and CO2 (depending on type), provides touchkey operation and LEDs for status indication, and receives power and configuration from the automation station via the KNX/PL‑Link interface.
Features and Benefits:
• 0 to 50°C measuring range enables broad commercial temperature monitoring
• KNX PL-Link Interface allows plug & play commissioning
• 30V maximum supply supports low‑voltage bus powering
• IP30 rating permits protected indoor wall installation
• UL and CSA approvals support standards‑based integration
• KNX PL-Link Interface allows plug & play commissioning
• 30V maximum supply supports low‑voltage bus powering
• IP30 rating permits protected indoor wall installation
• UL and CSA approvals support standards‑based integration
Applications
• Used with automation stations for room‑level control functions
• Suitable for controlling lighting, blinds and scene selection
• Ideal for CO2, humidity and temperature monitoring in offices
• Used with KNX S‑mode for PID temperature or ventilation control
• Suitable for LTE‑Mode sensor reporting where supported
• Suitable for controlling lighting, blinds and scene selection
• Ideal for CO2, humidity and temperature monitoring in offices
• Used with KNX S‑mode for PID temperature or ventilation control
• Suitable for LTE‑Mode sensor reporting where supported
How is the device powered during operation?
It is powered over the KNX/PL‑Link bus with an operating range of DC21 to 30V.
What maintenance is required for the sensors?
Clean the housing with a soft damp cloth and avoid solvent‑based cleaners.
Which environmental conditions are allowed for normal use?
Normal operation is specified for 0 to 50°C and humidity less than 85%rh.
What interfaces are available for commissioning and service?
A KNX plug is provided and a tool plug can connect the service Interface for loading applications.
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