AJAX KNX Interface
Bidirectional KNX gateway for AJAX alarm systems with 96-zone monitoring via Ethernet. Enables real-time security status on KNX bus with automatic scene triggering.
Overview
The AJAX-KNX is a professional KNX gateway designed for seamless integration of AJAX alarm systems into KNX building automation installations. This bidirectional interface enables real-time communication between security and building management systems over Ethernet, allowing integrators to create intelligent responses to security events throughout the KNX installation.
Technical Capabilities
The gateway provides comprehensive alarm system integration through Ethernet communication with AJAX panels. Key capabilities include monitoring up to 96 zones with individual KNX group objects for real-time status feedback (when system is armed). The AJAX-KNX connects via standard RJ45 Ethernet, simplifying installation in modern IP-based alarm infrastructures.
Area management supports up to 4 security areas with full arm, partial arm (night mode), and disarm control directly from KNX visualization or push-buttons. Each area provides 7 distinct status feedback objects: disarmed, armed, partial armed (night mode), fire alarm, siren on, panic alarm, and intrusion alarm. This granular status information enables sophisticated building automation responses to security events.
The scene integration feature automatically recalls KNX scenes (0-64) for each area status change, enabling pre-programmed building responses such as emergency lighting activation during intrusion or comfort scene recall when disarming. Power supply monitoring provides AC failure and battery failure status to KNX for comprehensive system health visibility.
Installation and Configuration
The compact 2 SU DIN-rail module requires an external 12-30VDC power supply connected via screw terminal. The Ethernet connection to the alarm panel uses a standard RJ45 connector. On the alarm system side, the telesurveillance IP address must be configured.
Connection to the KNX bus uses a pluggable micro terminal with push-wire connection for 0.6-0.8mm solid conductor wire. The device draws less than 16mA from the KNX bus. Galvanic isolation protects the KNX bus from the alarm system circuitry.
Configuration is performed entirely within ETS using the standard Elausys alarm gateway application. The unified ETS application concept shared across all Elausys alarm gateways means integrators familiar with other models can immediately work with the AJAX-KNX. Parameters include zone count selection (16/32/48/64/72/96), area mapping, scene assignments. The free ETS Demo version is fully supported.
Applications
Residential installations benefit from integrated security and home automation, where arming the alarm automatically activates night scenes, presence simulation, and energy-saving modes. Motion detectors from the AJAX system can trigger KNX lighting when system is armed, adding value to existing security infrastructure.
Commercial buildings leverage the gateway for coordinated emergency response, where fire alarm detection triggers escape route illumination, blind opening, and HVAC shutdown sequences. Integration with KNX visualization systems provides security monitoring from building management dashboards.
Multi-tenant properties use the 4-area support for independent zone control across different building sections, with centralized monitoring through KNX.
Compatibility and Integration
The AJAX-KNX is compatible with all AJAX alarm systems including Superior, Fibra and Baseline. The gateway integrates with any KNX TP installation and is fully configurable using ETS5 or ETS6, including the free ETS Demo version.
The gateway follows the unified Elausys alarm gateway architecture, ensuring consistent integration patterns with HyperVisu visualization servers and other KNX system components.