MDT RF-LK001.03S KNX-RF Media Coupler | Flush-mounted, Secure

Manufacturer: MDT

Article no.: 20073599

EAN: 4251916114459

Manufacturer item number: RF-LK001.03S

Manufacturer type: RF-LK001.03S

Weight: 0,052 kg

Available on request

pcs

This item is a new release and is expected to be available for the first time from 1 November 2026.

Your KNX system expands beyond cable boundaries and connects seamlessly with radio components. You gain access to all areas you had previously forgotten. This is exactly what this line coupler enables, as it is the invisible link between two worlds.

KNX RF+ Secure: The coupler supports KNX Data Secure and ensures encrypted communication between radio and cable segments.
Segment Coupler Function: From ETS 6 onwards, you can use the coupler as a segment coupler to realise complex topologies.
Efficient Filtering: Integrated filter functions reduce bus load and optimise telegram processing.
Compact Design: With just 41 x 41 x 22 mm, the coupler fits easily into a standard flush-mounted box.
Frequency and Range: Operates at 868.3 MHz with up to 150 m range in free field for stable radio connections.
Easy Commissioning: Parameterisation is done via ETS from version 5, no additional software required.

Technology and Application Area

The MDT RF-LK001.03S is a KNX RF+ line coupler that connects radio devices such as push-buttons or sensors with the wired KNX TP bus. For laypersons, this means you can integrate wireless components into your existing KNX system without laying new cables. Communication takes place in system mode, enabling full integration into the KNX topology.

Security and Reliability

With KNX Data Secure, the coupler protects all transmitted data against tampering. This is especially important in modern smart homes where security plays a central role. The segment coupler function from ETS 6 allows you to logically separate radio lines, thereby increasing the overall system stability.

Technical Details at a Glance

The coupler operates at 868.3 MHz and achieves a range of up to 150 m in free field. Power supply is directly via the KNX bus, with a power consumption of less than 0.3 W. Thanks to Long Frame Support, programming is particularly fast. The IP20 protection rating and the temperature range from 0 to 45 °C make the device suitable for use in dry indoor environments.

Filter Functions and Topology

The integrated filter functions reduce bus load by blocking unnecessary telegrams. You can use extended group addresses to implement complex controls efficiently. For parameterisation, ETS from version 5 is required, with full functionality available from ETS 6.

Installation and Integration

The compact design allows mounting in a standard flush-mounted box. The integrated bus coupler simplifies installation as no additional components are required. After assigning the physical address and loading the application programme, the coupler is ready for immediate use.

Combination Options

The RF-LK001.03S is suitable for connecting MDT KNX RF+ devices such as push-buttons or glass push-buttons. Furthermore, you can combine it with line or area couplers to realise complex building structures.

MDT develops and manufactures high-quality KNX components in Germany. The company stands for innovation, reliability, and practical solutions. With a broad portfolio of switching, dimming, and control devices, MDT offers everything you need for professional building automation. Manufacturing is carried out according to ISO 9001 standards, and the products are known for their durability and stability.

Apple HomeKit: No
BAB-Tec: No
Bluetooth: No
Brand: MDT
Casambi: No
Class: Media coupler
DALI: No
ENOcean: No
free@home: No
Gira One: No
Google Assistant: No
Hager KNXeasy: No
Installation location: Wall
JUNG HOME: No
KNX: Yes
KNX IP-Router: No
KNX-IP-Interface: No
KNX-Line-Coupler: Yes
KNX-RF: Yes
KNX-RF media coupler: Yes
KNX-Secure: Yes
KNX-TP: Yes
KNX-USB-Interface: No
Manufacturer item number: RF-LK001.03S
Manufacturer type: RF-LK001.03S
Manufacturer's Description: KNX RF+ Line Coupler, flush mounted, Secure
Matter: No
Mbus: No
Modbus: No
Modbus RTU: No
Modbus TCP: No
Samsung SmartThings: No
Shelly: No
Siemens LOGO!: No
Theben LUXORliving: No
Thread: No
Type of transmission: radio
Wi-Fi: No
Wiser Home: No
with Netatmo: No
Zigbee: No

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Data Sheet

Manufacturer information

MDT
MDT technologies GmbH
Papiermühle 1
51766 Engelskirchen
DE

knx@mdt.de
www.mdt.de/

Description

This item is a new release and is expected to be available for the first time from 1 November 2026.

KNX RF+ Secure: The coupler supports KNX Data Secure and ensures encrypted communication between radio and cable segments.
Segment Coupler Function: From ETS 6 onwards, you can use the coupler as a segment coupler to realise complex topologies.
Efficient Filtering: Integrated filter functions reduce bus load and optimise telegram processing.
Compact Design: With just 41 x 41 x 22 mm, the coupler fits easily into a standard flush-mounted box.
Frequency and Range: Operates at 868.3 MHz with up to 150 m range in free field for stable radio connections.
Easy Commissioning: Parameterisation is done via ETS from version 5, no additional software required.