BUSCH-JAEGER KNX Binary Input 4-Channel BI-M-4.230.1.11 (2CDG510016R0021)

Integrating conventional switches, push-buttons, or potential-free contacts into a KNX building automation system can be challenging without the right interface. The BUSCH-JAEGER Binary Input 4-Channel BI-M-4.230.1.11 (2CDG510016R0021) solves this by converting up to four binary signals into KNX telegrams, enabling seamless control of lighting, blinds, and other functions.

Who is it for

This device is intended for electricians and system integrators who need to connect standard 230 V AC/DC potential-free contacts to a KNX bus. It is suitable for residential and commercial installations where existing switches or sensors must be integrated into a smart building network.

Main features

• 4 independent binary inputs for potential-free contacts
• Input voltage: 230 V AC/DC
• DIN rail mounting (MDRC), width 4 TE (72 mm)
• Powered via KNX bus, no additional power supply needed
• Each input configurable for switching, dimming, blind control, value transmitter, scene recall, or counter
• Integrated logic functions: AND, OR, XOR, NOT
• Configuration via ETS software

Specifications

• Bus system: KNX
• Number of inputs: 4
• Input type: Binary (potential-free contacts)
• Input voltage: 230 V AC/DC
• Mounting: DIN rail (MDRC)
• Module width: 4 TE (72 mm)
• Power supply: KNX bus (24 V DC)
• Current consumption from KNX: approx. 10 mA
• Connection type: Screw terminals
• Max. input cable length: 100 m
• Min. input signal duration: 20 ms
• Operating temperature: -5 °C to +45 °C
• Storage temperature: -25 °C to +70 °C
• Housing material: Plastic

Tips

Use ETS to assign each input its function and logic operations. Ensure all connected contacts are potential-free to avoid damage. The device fits standard DIN rails and occupies 4 modules of space.