Presence Detectors

Elsner Elektronik's KNX presence detectors are central components in smart buildings. They integrate seamlessly into the KNX system and communicate with components such as lighting control, blinds or heating controls. This creates an automated environment that responds to actual presence and intelligently implements energy savings.

In principle, presence detectors are based on similar technical principles as motion detectors, but their functionality goes much further. They are also electrical sensors that detect changes and trigger corresponding actions. The difference: technical superiority. While classic KNX motion detectors primarily detect larger, distinct movements in the room, KNX presence detectors react to even the slightest movements and also register the current lighting conditions. A significant advantage and a clear distinguishing feature of our devices is their combination function: presence detectors combined with AQS (Air Quality Sensor).

This allows not only lighting and shading functions, but also HVAC processes to be controlled in a demand-driven and energy-efficient manner by incorporating presence, brightness and air quality values into the KNX logic. This provides finer control and is ideal for energy-efficient and comfort-oriented smart building concepts. Our presence detectors are particularly suitable for indoor use and control lighting, room thermostats and other components in smart homes or offices.

Anyone looking to go beyond a classic motion detector solution should opt for our KNX presence detectors. Design also plays an important role in product selection, as ceiling detectors are prominently located and visible – often the architect has the final say here. Our devices from the Intra line score points with their understated, architecture-friendly design, which integrates harmoniously into high-quality interiors without compromising on function or precision. Our presence detectors are therefore the right choice for a modern smart building with intelligent lighting control, greater security and maximum energy efficiency.

Some of our KNX presence detectors combine several functions in a single device – such as the Sewi KNX AQS/TH L-Pr light: presence detector, brightness sensor, temperature, humidity and CO₂ sensor are all part of an intelligent and fully automatic control system for lighting, climate and energy. Through the use of multifunctional modules and logic gates, the detectors can be flexibly adapted to a wide range of requirements, thus creating maximum efficiency and comfort. Take advantage of our multifunctional KNX sensors and make your building fit for the future.

What is important when selecting KNX presence detectors?
When selecting KNX presence detectors, the most important factors are the detection range, multi-sensor technology (e.g. presence, brightness, temperature, CO₂), energy efficiency functions such as adaptive follow-up times, and easy integration into the KNX system. Our tip: Choose the detector that suits the size of the room and the application in order to optimally combine comfort and energy savings – if you have any further questions, please do not hesitate to contact our service team.

Are KNX presence detectors and motion detectors also suitable for the home?
Yes, KNX presence detectors and motion detectors are also ideal for the home. They ensure that lights in the hallway or garage switch on automatically, roller shutters are controlled according to daylight, and energy-saving modes prevent unnecessary power consumption – for greater comfort, security, and energy efficiency in everyday life.

Ceiling detectors with integrated heating and cooling control are ideal for automatically controlling rooms, not only in private homes but also in office buildings. They detect the presence of people and dynamically adjust lighting, temperature and roller shutters. This provides optimum glare protection and comfort when people are present, while heat gains from sunlight are utilised and energy costs are reduced when people are absent.

Can I network several presence detectors with each other?
Yes, several KNX presence detectors can be flexibly networked with each other. Using parallel connection or the KNX logic functions, you can also cover large rooms such as open-plan offices, open living areas or long corridors seamlessly and evenly. This ensures optimum detection and harmonious lighting and climate control throughout the entire area.

What are the advantages of constant light control?
Constant light control ensures that daylight and artificial light are automatically harmoniously coordinated. This keeps the desired brightness in the room constant – regardless of changing lighting conditions. This increases comfort, creates a pleasant working or living environment and at the same time reduces energy consumption, as artificial light is only switched on when and to the extent that it is really necessary. In the working environment in particular, there are also legal requirements for workplace brightness, which constant light control ensures are met.

How easy is it to install and operate?
The installation and operation of KNX presence detectors is very simple: the devices can be seamlessly integrated into the KNX system and conveniently configured via Engineering Tool Software (ETS). Sensitivity, follow-up times and energy-saving modes can be quickly adjusted, which makes both commissioning and maintenance much easier.

Order and test KNX presence and motion detectors from Elsner Elektronik now!
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