Indoor Air Quality Sensor – now with particulate matter measurement
With our SK25-LMS we present our new multisensor, expanding our portfolio with a solution for comprehensive indoor air quality assessment.
CO₂, VOCs, temperature, humidity, and particulate matter are measured in a single device and made available within the KNX system for demand-controlled ventilation.
Features:
• Integrated particulate matter (PM) measurement
• Ideal for schools, offices, and residential buildings
• Basis for demand-controlled ventilation
Arcus-EDS at Light&Building 2026
We were at Light + Building and presented our latest solutions related to water, soil and air. We would like to thank the many visitors for stopping by and for the interesting conversations.
This time, our main focus was on KNX sensors for outdoor applications as well as our new multisensor for air quality.
Learn more about our 2026 trade fair highlights
KNX Soil Moisture Sensor – Understanding plants, saving water
The KNX soil moisture sensor measures how much plant-available water is present in the soil – directly in the root zone.
KNX Water Quality Sensor – Reliable water quality monitoring
The KNX water quality sensor continuously and reliably monitors the key water parameters pH value and ORP.
Indoor Air Quality Sensor – Now with particulate matter measurement
With the SK25-LMS, we are expanding our portfolio with a solution for comprehensive indoor air quality assessment.
Smart Soil Moisture Monitoring with KNX
As temperatures drop and nature slows down, now is the perfect time to take stock and prepare for the coming season.
Are you considering all aspects of your KNX planning?
Many buildings are automated down to the last detail with KNX – yet planning often stops at the exterior wall. However, KNX offers significant potential when it comes to water management, both outdoors and in greenhouses.
With our KNX soil moisture sensor SK80-BFT / BFTLFT, you can keep track of the key parameters needed for sustainable and precise irrigation. The maintenance-free Watermark® technology provides reliable insights into the actual water demand in the root zone – seamlessly integrated into your KNX system.
Whether in gardens, greenhouses, or professional landscaped and agricultural areas, the sensor lays the foundation for truly demand-driven and resource-efficient irrigation.
Learn more about how it works and where it can be used:
Reliable Water Quality Monitoring – with KNX
The SK80-WAQ sensor enables continuous monitoring of pH value, redox potential (ORP), and water temperature – directly integrable into KNX systems. Thanks to the integrated display, current readings and calibration can be easily checked on site at any time.
Typical applications range from private pools to hotel and spa facilities, as well as technical water systems in industry and animal husbandry.
Learn more about functionality and possible applications:
Ventilation with heat recovery – easily controlled via KNX
A comfortable indoor climate can now be achieved efficiently and reliably. With ventilation units featuring heat recovery and our smart KNX-Lunos-Control4, the system automatically adapts to changing conditions—ensuring fresh air with minimal energy loss, in both summer and winter.
You can find more information about supported devices and system features on our website.
Professional Commissioning – Practical Video Guides
Our video tutorials show you step by step how to integrate KNX-Lunos-Control4 and configure it individually in ETS.
A Look at Our Product Innovations
We’re kicking off 2025 with two exciting product advancements:
- KNX Duct Sensor for Temperature, Humidity, and CO₂ (SK10-THC-CO2-KF10): Designed for precise air quality monitoring with an optimized form factor for flexible use.
- KNX Water Quality Sensor (SK80-WAQ): Features a new design with an integrated display for easy data reading and on-device calibration.
Both products offer enhanced functions to make building automation even more efficient. Stay tuned for more details coming soon!
KNX Gateways – Versatile Networking for Smart Building Automation
Our new newsletter on KNX gateways is out!
In this edition, we show you how to expand your KNX system with our gateways. In our current white paper, we report on how KNX gateways facilitate the integration of devices without a KNX connection, increase efficiency, and reduce costs.
Our white paper provides comprehensive insights and practical application examples for the effective use of KNX gateways.
Here you can find our white paper on KNX gateways. Feel free to request a personal quote for our products.
To the KNX Gateway white paper...
Discover the right KNX gateways for your application: Our gateways provide solutions for integrating various systems and devices, allowing you to control your building automation centrally and efficiently.
Not signed up for our newsletter yet? Once a quarter, we inform you about news, products, and important information related to KNX.
Here is the link to sign up for the newsletter
Take a deep breath with KNX
Intelligent sensors and control for perfect air quality
Our new newsletter on air quality in summer is here!
We report on how the indoor climate can be effectively controlled with the right ventilation, as well as the monitoring and regulation of indoor air parameters such as temperature, humidity, CO2, and VOCs. Of course, this works effortlessly with our KNX products!
Learn more about our KNX module for Lunos fan control here. Feel free to request a personal offer from us.
Find the right KNX sensor for air quality: monitoring and controlling temperature, humidity, and CO2 or VOCs in one device
To our air quality sensors CO2 | VOC
Not yet signed up for our newsletter? Once a quarter, we report on news, products, and interesting facts about KNX.
Click here to sign up for the newsletter
Dear customers,
We want to thank everyone who visited us at Light & Building!
Below, you'll find some snapshots from our exhibition booth.
It was a pleasure to reconnect with familiar faces and establish new promising connections. Your keen interest and positive feedback have truly inspired us. Thank you!
For any further inquiries or information, feel free to contact us anytime.
Best regards,
Your Arcus-EDS Team
Light & Building 2024
We are back in Frankfurt am Main for Light&Building this year! We will be presenting our full range of products and exciting new items such as our level sensor for heating oil and our new KNX Display Touch_IT AC35...
You can find us in Hall 9 at Booth C60. Feel free to contact us to schedule an appointment!
3,5-Zoll KNX-Display with increased performance and new design
The Touch_IT AC35 is the successor to our popular Touch_IT SMART. For optimal performance, we have equipped the Touch_IT AC35 with a faster processor and more memory. Micro-USB port and SD card slot remain conveniently accessible from the outside. The KNX display showcases a new design, framed by a sturdy aluminum frame with rounded corners.
Our new hydrostatic fill lever meter for heating oil is now available!
SK80-F-T-PMO
How much heating oil was consumed last winter?
The answer is provided by our KNX fill level meter SK80-F.
The SK80-F-T-PMO measures and regulates filling and level levels in heating oil tanks of various designs. The measuring system consists of a hydrostatic sensor (including temperature detection) and the KNX coupler with an integrated display.
Max. filling height: 5 m
Cable length: 10 m (extension possible)
Technical data as well as the product sheet for download can be found here. We would be happy to provide a non-binding offer: