MDT KNX Motion Sensor and Automatic Switch SCN-BWM55T06.02 TS55 Black Matte

The MDT KNX Motion Sensor and Automatic Switch SCN-BWM55T06.02 TS55 Black Matte is a combined presence and motion detector with an integrated automatic switching function designed for KNX installations. Housed in a TS55 form factor and finished in black matte, this device detects occupancy and movement to trigger lighting and other loads on a KNX bus. It is intended for wall mounting where discreet detection and automatic control of electrical circuits are required within residential or commercial environments.

Advantages

The device integrates motion and presence detection with an automatic switch function in a compact TS55 design, reducing the need for separate components. It connects to a KNX system to provide centralised control and event signalling, supporting energy-efficient operation by switching lighting or other loads based on occupancy. The black matte finish offers a low-reflective, unobtrusive appearance suitable for modern interiors. Configuration through the KNX tools allows setting detection zones, time delays and logic behaviour to match specific installation requirements.

Suitable for

• Automatic lighting control in corridors, stairwells and entryways
• Occupancy-based switching in offices, meeting rooms and shared spaces
• Energy-saving control in residential rooms and common areas
• Integration into KNX building automation systems for central management

When it may not be suitable

This KNX motion sensor requires a KNX bus installation and appropriate system components; it is not standalone and will not function without integration into a KNX network. It may not be suitable for applications that require wireless detectors, battery-powered operation, or independent local switching without KNX configuration. Very small detection gaps or highly obstructed areas could limit sensor performance unless positioned and configured accordingly.

Key specifications

• Function: Combined motion/presence detector with automatic switch
• Design: TS55 form factor, wall-mounted
• Finish: Black matte
• Integration: KNX bus connection for control and configuration
• Adjustments: Configurable detection zones, time delay and logic via KNX programming
• Typical applications: Indoor occupancy detection and load switching for lighting and circuits

How to use

Install the unit in a TS55-compatible wall frame at a height and angle that provide clear coverage of the intended area. Connect the device to the KNX bus according to KNX installation standards and register it in the KNX project. Program detection sensitivity, presence mode, switch-off delay and group addresses using KNX commissioning tools to match room layout and usage patterns. After commissioning, the sensor will report presence and trigger switching actions on the KNX bus according to the configured logic.

What to consider before purchase

• Availability of a KNX installation and required bus infrastructure
• Compatibility with existing KNX devices and the project’s addressing scheme
• Mounting location and field of view necessary for reliable detection
• Whether wired KNX operation meets requirements compared with wireless or battery alternatives

Usage recommendations

Position the sensor to minimise occlusions and avoid direct view of heating appliances or large glass surfaces to reduce false triggers. Use KNX programming to fine-tune presence sensitivity and time delays for typical occupancy patterns to maximise energy savings while preserving comfort.