Description
Introduction
The ABB TB/U1.2.1-CG (Product ID: 2CKA006300A1578) is an individually configurable glass control element designed for KNX smart building systems. As part of the premium ABB-tacteo® product line, this capacitive touch sensor supports 1-fold or 2-fold key assignment, allowing intuitive operation of switching, dimming, shutter/blind position, value sending, and scene handling in modern commercial or residential interiors. This device is part of our professional KNX panel range.

Equipped with an internal KNX bus coupler for direct connection to KNX Twisted Pair (TP) lines, the flush-mounted unit features integrated proximity and ambient light sensors. The device detects an approaching hand to automatically illuminate control icons and dynamically adjusts backlight intensity based on ambient room conditions, while an integrated anti-theft mechanism protects against unauthorized removal.
Key Features
- Capacitive glass touch surface with customizable icons and labeling
- Configurable 1-fold or 2-fold touch control functionality
- Integrated proximity sensor for automatic backlight activation upon approach
- Integrated ambient light sensor for adaptive illumination brightness
- Supports switching, dimming, shutter/blind control, value sending, and scene handling
- Integrated KNX bus coupler for direct connection to KNX TP lines
- Anti-theft / removal protection mechanism
- Flush-mounted installation with dimensions of 86 mm x 86 mm x 9.5 mm and IP20 degree of protection
Benefits
- Customizable Glass Surface: Icons and labeling can be customized during ordering via the ABB tacteo® web configurator.
- Integrated KNX TP Bus Coupler: Features a built-in KNX bus coupler for direct connection to KNX TP lines without separate hardware.
- Proximity & Light Sensing: Integrated proximity sensor activates backlighting upon approach, while the ambient light sensor provides adaptive illumination brightness.
- Versatile Room Control: Supports switching, dimming, shutter and blind control, value sending, and scene handling with 1-fold or 2-fold key assignment.
- Secure & Compact Hardware: Offers an anti-theft removal protection mechanism and compact dimensions of 86 mm x 86 mm x 9.5 mm with an IP20 rating.
Technical Specifications
Applications
- Lighting & Dimming Automation: Room-level switching, continuous dimming, and scene recall over KNX TP systems.
- Shutter & Blind Control: Touch control for motorized blinds, shutters, and position values.
- Commercial & Residential Interiors: Surface-flush glass interface designed for modern architectural environments requiring custom labeling.
Installation Notes
- Designed for flush-mounted installation in standard wall junction boxes.
- Connects directly to standard KNX TP line cabling using the internal bus coupler.
- Features anti-theft removal protection to prevent unauthorized detachment from the wall mounting.
- Rated for ambient operating temperatures from -5 °C to +45 °C with IP20 ingress protection.
Developer Resources
- Manufacturer Product Page: https://new.abb.com/products/2CKA006300A1578/tb-u1-2-1-cg
FAQ
What is the order code for the ABB TB/U1.2.1-CG control element?
The official ABB Product ID / Order Code for this element is 2CKA006300A1578. Explore more ABB KNX solutions for professional building automation projects.
Does the ABB TB/U1.2.1-CG require a separate KNX bus coupler?
No, the device includes an integrated KNX bus coupler for direct connection to KNX TP lines. For certificates and current technical files, refer to the manufacturer technical documentation.
How does the proximity feature work on the tacteo control element?
An integrated proximity sensor detects when a hand approaches the surface and automatically turns on the backlight illumination.
What are the outer dimensions and IP protection rating of this model?
The dimensions are 86 mm (H) x 86 mm (W) x 9.5 mm (D), and it is rated IP20.
What is the exact product model?
The order/model code for this page is TB/U1.2.1-CG. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by ABB.
Conclusion
The ABB TB/U1.2.1-CG tacteo® glass control element combines intelligent capacitive touch features with full KNX TP system integration. Installers and system integrators can review our dealer and project support options.
Featuring custom icon support, ambient light adaptation, proximity activation, and flush mounting, it serves as a robust B2B solution for modern room automation.






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