MDT KNX binary input, 32-channel, potential-free, DIN rail mount

MDT Binary Input – Versatile status monitoring for KNX systems

The MDT binary input is a flexible and reliable solution for detecting and processing state changes in modern KNX building automation systems . With variants ranging from 4 to 32 inputs and optional potential-free or live inputs (12–24V AC/DC or 230V AC), it offers maximum adaptability for residential and commercial applications.

Key features

• Flexible options:
  • Available as a 4-speed, 8-speed, 16-speed or 32-speed model.
  • Compatible with potential-free contacts and voltage inputs (12–24V AC/DC or 230V AC).
• Intelligent features:
  • Multi-tap function for transmitting up to four values ​​or DPTs.
  • Group control via long or extra-long key press.
  • Four integrated logic modules for complex evaluations, e.g., "all windows closed".
  • Pulse and switching counters for connecting energy meters (e.g. Eltako DSZ).
  • Supports scene control and configurable locking objects.
• Galvanic isolation: High protection against voltage flashovers between inputs and KNX bus.
• Simple parameterization: Fully ETS5 compatible with adjustable debounce time, thresholds and function logic.

Technical details

• Entrances:
  • Voltage inputs: 12–24V AC/DC or 230V AC.
  • Potential-free contacts with internal query voltage (12V DC).
  • Maximum cable length: up to 100 m.
• Power consumption: Typical consumption < 0.3 W via the KNX bus.
• Environmental conditions:
  • Operating temperature: 0 °C – +45 °C.
  • Protection class: IP20 – suitable for dry indoor areas.
• Dimensions: DIN rail mounting device with 2 to 12 modules (depending on model).
• KNX interface: TP-256, compatible with ETS5.

Application areas

• Detection and monitoring of door and window contacts.
• Integration of conventional push buttons and switches into KNX systems.
• Control of lighting, blinds and shading systems.
• Energy monitoring through pulse counting of external devices.

Installation and integration

• Easy mounting on the DIN rail.
• Power is supplied directly via the KNX bus – no external transformer is required.
• Intuitive parameterization with ETS5 for individual adjustment of all channels.

Product information

Manufacturer part number: BE-32000.02
Article number: SMH0262

Shipping costs: free shipping within the EU for orders over €149; for orders under €149, we charge €5.90 shipping costs.

Switzerland: flat rate €25.00

Returns: You can cancel your purchase within 14 days of receipt and then return the products to us. Please note that for sustainability reasons and a fair pricing philosophy, we only cover return shipping costs in the case of a defect or warranty claim.

MDT technologies GmbH
Paper mill 1
DE-51766 Engelskirchen
knx@mdt.de