Description
Introduction
The ABB MT/S4.12.2M Security Terminal (Product ID: 2CDG110109R0011) is a 4-fold Modular DIN-Rail Component (MDRC) designed for the monitored connection of security technology sensors to the ABB i-bus® KNX system. Featuring four input channels (zones), this signalling group terminal integrates security devices such as magnetic contacts and glass-breakage sensors into the automated building environment. This device is part of our KNX automation components range.

Operating as a stand-alone security system or integrated with a security module or intrusion alarm panel via a KNX interface, the MT/S4.12.2M provides high reliability for surveillance setups. It requires a 12 V DC SELV power supply (e.g. NTU/S 12.2000.1) and provides 3 outputs along with local manual operation capabilities for straightforward commissioning and testing.
Key Features
- 4 monitored input channels / zones for security sensors.
- 3 integrated outputs with 12 V DC output voltage (Uout).
- Maximum switching current rating of 0.6 A.
- Manual operation capability supported on device.
- Low power loss of 0.9 W.
- Requires external 12 V DC SELV power supply (e.g., NTU/S 12.2000.1).
- Standard Modular DIN-Rail Component (MDRC) design.
Benefits
- Monitored Integration: Provides reliable, monitored connections for security technology sensors like magnetic contacts and glass-breakage sensors to ABB i-bus® KNX.
- Flexible Security Architecture: Operates as a stand-alone security unit or in combination with KNX-interfaced security modules and intrusion alarm panels.
- 4 Input Zones: Features four dedicated analog input channels (0…10 V / 4…20 mA) for detailed zone surveillance.
- Integrated Output Capabilities: Includes 3 outputs with an output voltage (Uout) of 12 V DC and maximum switching current of 0.6 A.
- Manual Control: Equipped with manual operation controls on the device for local field diagnostics and testing.
- Energy-Efficient Design: Operates with a minimal power loss rating of 0.9 W within standard MDRC distribution enclosures.
Technical Specifications
Applications
- Door and Window Surveillance: Monitored integration of magnetic contacts to signal open or unauthorized access points.
- Glass-Breakage Detection: Connecting acoustic or glass-break sensors to alert KNX automation systems.
- Area Surveillance: Linking security sensor zones to an intrusion alarm panel or ABB i-bus® KNX system.
Installation Notes
- Mounting and Power Requirements: Install as an MDRC unit on standard 35 mm DIN rails. A 12 V DC SELV power supply (such as the ABB NTU/S 12.2000.1) is required for operation.
- Wiring and Setup: Wire input zones and outputs according to ABB Wiring Diagram 2CDC072239F0009 and instructions provided in document 2CDG941072P0002.
Developer Resources
- ABB Instructions and Manuals Document: 2CDG941072P0002
- ABB Wiring Diagram Document: 2CDC072239F0009
- CE Declaration of Conformity: 2CDK513011D2701
- Manufacturer Product Page: https://new.abb.com/products/2CDG110109R0011/mt-s4-12-2m
FAQ
What power supply is required for the ABB MT/S4.12.2M?
The device requires a 12 V DC SELV power supply, such as the ABB NTU/S 12.2000.1. Explore more ABB automation devices for professional building automation projects.
How many inputs and outputs does the MT/S4.12.2M feature?
The security terminal features 4 analog input channels (zones) and 3 outputs. For certificates and current technical files, refer to the official ABB product page.
Can this terminal function without a central alarm panel?
Yes, it can function as a stand-alone security system or be combined with a security module / intrusion alarm panel with a KNX interface.
Does the MT/S4.12.2M support manual operation?
Yes, manual operation is supported directly on the device.
What is the exact product model?
The order/model code for this page is MT/S4.12.2M. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by ABB.
Conclusion
The ABB MT/S4.12.2M Security Terminal (2CDG110109R0011) is a versatile 4-fold MDRC unit that connects security sensors to the ABB i-bus® KNX network. With 4 monitored input channels, 3 outputs, and flexible deployment as a standalone or panel-connected system, it offers precise surveillance integration for professional KNX projects. Installers and system integrators can review our professional project support options.








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