Description
Introduction
The ABB CT/S2.1 Busch-ControlTouch_2 (Product ID: 2CKA006136A0218) is an MDRC DIN-rail mounted KNX server engineered for complete system visualization and remote management across smartphones, tablets, and Windows computers. Operating on KNX (TP) bus systems with an Ethernet communication interface, this horizontal mounting device serves as a central hub bridging home automation, multimedia entertainment, and IP-based security functions.

Designed with web-based commissioning featuring a step-by-step wizard function, the CT/S2.1 simplifies configuration for system integrators. It provides dedicated applications for iOS, Android, and Windows devices, enabling intuitive control over switching, dimming, blinds, room temperature control (RTC), scenes, Sonos audio integration, Philips Hue lighting, and IP camera video surveillance.
Key Features
- Bus System Interface: Designed for KNX (TP) networks with an integrated Ethernet communication interface.
- Comprehensive Automation Functions: Supports switching, dimming, blind control, RTC regulation, timing, scenes, and complex sequences.
- Surveillance & Alerts: Supports video surveillance with IP cameras and sends alert notifications via email or push messages containing camera images.
- System Diagnostics & Updates: Features 2 status LEDs and supports software updates for long-term functionality.
- Standards Compliance: Manufactured in compliance with CE (2CKA100000E4474) and UKCA (2CKA400000E0304) standards.
Benefits
- Multi-Platform Control: Provides dedicated applications for iOS, Android, and Windows computers featuring intuitive navigation, list views, and room image controls.
- Web-Based Commissioning: Simplifies setup for integrators via a fully web-based interface with a guided wizard function.
- Smart Ecosystem Integration: Integrates seamlessly with Sonos devices via KNX bridging, Philips Hue lighting, and UPnP multimedia systems.
- Security & Infotainment: Features IP camera video surveillance, push/email image notifications, and up to 3 years of usage data monitoring.
- Modular MDRC Form Factor: Compact horizontal DIN-rail mounting with IP20 protection for easy installation in standard distribution boards.
Technical Specifications
Applications
- Residential Automation: Centralized management of KNX lighting, heating, RTC, scenes, and blinds from mobile or desktop interfaces.
- Multimedia & Smart Ecosystems: Bridging KNX installations with UPnP multimedia devices, Sonos sound systems, and Philips Hue platforms.
- Security & Historical Tracking: Monitoring live IP camera video feeds and storing up to 3 years of usage data for system analysis.
Installation Notes
- Mounting Orientation: Designed strictly for horizontal DIN-rail mounting inside enclosure cabinets providing IP20 protection.
- Interface Connections: Requires direct connectivity to a KNX (TP) bus line and a standard Ethernet network connection.
- Commissioning Reference: Manual operation directly on the device is not supported; system configuration relies on web-based wizard commissioning and instruction manual 2CKA001473B9379.
Developer Resources
- ABB Instruction Manual Reference: 2CKA001473B9379
- CE Declaration of Conformity: 2CKA100000E4474
- UKCA Declaration of Conformity: 2CKA400000E0304
- Official ABB Product Page: https://new.abb.com/products/2CKA006136A0218/ct-s2-1
FAQ
How is the ABB CT/S2.1 commissioned?
The ABB CT/S2.1 Busch-ControlTouch_2 features fully web-based commissioning with an integrated setup wizard. Explore more ABB building automation products for professional building automation projects.
Which operating systems are supported by the CT/S2.1 applications?
The unit supports control apps dedicated for iOS, Android, and Windows operating systems.
Does the CT/S2.1 support IP camera surveillance?
Yes, it supports video surveillance with IP cameras and can send push or email notifications including pictures captured from connected IP cameras.
How long can the CT/S2.1 store usage data?
The device provides infotainment monitoring that tracks and displays usage data for up to 3 years.
What is the exact product model?
The order/model code for this page is CT/S2.1. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by ABB.
Conclusion
The ABB CT/S2.1 Busch-ControlTouch_2 (Product ID 2CKA006136A0218) delivers a robust, all-in-one KNX visualization server. By unifying multimedia bridging, IP camera security alerts, and comprehensive KNX control into a horizontal DIN-rail unit, it offers an efficient visualization solution for modern building automation projects. Installers and system integrators can review our installer purchasing support options.








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