BUSCH-JAEGER KNX Binary Input 2-fold Flush-Mounted BI-F-2.0.12 (2CDG510023R0021)

In modern KNX building automation, integrating conventional switches and potential-free contacts is essential. The BUSCH-JAEGER Binary Input 2-fold Flush-Mounted BI-F-2.0.12 enables exactly that: it converts signals from standard push-buttons or switches into KNX telegrams, making it a key component for intelligent control of lighting, blinds, and scenes.

Key specifications

• Bus System: KNX
• Number of Inputs: 2
• Input Type: Potential-free contacts (binary)
• Installation Type: Flush-mounted (UP / Unterputz)
• Functions per Input: Switching, Dimming, Blind Control, Value Transmitter (1/2/4-byte), Scene Recall, Counter
• Connection Type: KNX bus terminal, 2x input terminals
• Power Supply: Via KNX bus
• Current Consumption (KNX Bus): Max. 5 mA
• Protection Class: IP20
• Operating Temperature: -5 °C to +45 °C
• Max. Cable Length (Inputs): 10 m
• Configuration Software: ETS (Engineering Tool Software)
• Compatibility: Standard push-buttons, switches, potential-free contacts
• Housing Material: Plastic (Halogen-free)

Why choose it

This binary input offers flexible integration of conventional control elements into KNX systems. With two independent channels, it supports a wide range of functions, from simple switching to complex value transmission and scene recall. Its flush-mounted design fits standard wall boxes, making it ideal for retrofits and new installations alike.

Ideal use cases

• Connecting existing push-buttons or switches to a KNX smart home system
• Controlling lighting, dimming, and blinds via KNX
• Triggering scenes or sending values (e.g., temperature, brightness) from simple contacts
• Counting pulses from energy meters or other pulse sources

Good to know

The device is powered directly from the KNX bus, eliminating the need for an additional power supply. Configuration is done via ETS, the standard software for KNX projects. With a maximum cable length of 10 meters per input, it offers flexibility in wiring.