MDT KNX binary input, 4-channel, potential-free, DIN rail mount

MDT Binary Input – Flexibility and precision for your KNX building automation

The MDT binary input is a powerful and versatile solution for precise condition monitoring and control in modern KNX building automation systems . With variants ranging from 4 to 32 inputs and support for potential-free contacts as well as voltages from 12–24V AC/DC or 230V AC, this device offers maximum adaptability for complex automation requirements.

Key features

• Versatile designs:
  • Available in 4-, 8-, 16- and 32-speed versions.
  • Compatible with potential-free contacts or voltage inputs (12–24V AC/DC or 230V AC).
• Innovative features:
  • Multi-tap function: Transmits up to four values ​​or DPTs per input.
  • Group control: Long or extra-long button press for advanced control options.
  • Integrated logic modules: Creation of complex scenarios, e.g., "all windows closed".
  • Supports dimmer, blind, pulse and switching counter functions .
• Individual configuration:
  • Parameterization of debounce time, contact type and telegram rate limit.
  • Scene control and blocking objects can be configured individually for each channel.
• Robust safety: Galvanically isolated inputs ensure maximum operational safety and protection of the KNX bus.

Technical details

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

Application areas

• Condition monitoring of door and window contacts.
• Control of lighting, blinds and heating valves.
• Energy monitoring and consumption analysis using pulse counters.
• Creation of intelligent automation scenarios using logic modules.

Easy installation and parameterization

• Direct DIN rail mounting (REG) for easy integration.
• Convenient configuration via ETS5 software.
• No separate power supply required – operation is entirely via the KNX bus.

Product information

Manufacturer part number: BE-04000.02
Article number: SMH0255

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