I/O Module Ajax EN54 124590.280.WH1 wireless addressable 2 inputs 2 outputs

Ajax EN54 I/O Module 124590.280.WH1 is a wireless, addressable interface with two configurable inputs and two relay outputs. It integrates with Ajax security systems to enable connection and remote monitoring of wired detectors, sirens and control circuits without running new cables. The module supports alarm signalling and device triggering, offering a compact solution to expand alarm and automation capabilities in residential and commercial environments.

Advantages

The module provides wireless integration that reduces installation time and avoids additional wiring. Addressability ensures each module is uniquely identified in the system and allows precise monitoring of input and output states. Two inputs accept normally open or normally closed sensors, while two outputs switch external loads or trigger sirens and automation devices. The compact form factor and standard mounting options simplify placement in control panels or junction boxes.

Suitable for

• Connecting wired door, window or motion detectors to an Ajax wireless system
• Triggering external sirens, strobes or alarm panels
• Switching control circuits for lighting, ventilation or auxiliary equipment
• Integrating third-party sensors and peripherals into a monitored security setup

Key specifications

• Communication: wireless, compatible with Ajax hub systems
• Inputs: 2 configurable inputs supporting normally open and normally closed sensors
• Outputs: 2 relay outputs for switching external loads and alarm devices
• Addressable: each device can be assigned a unique identifier within the system
• Mounting: compact housing suitable for control panels and junction boxes
• Use cases: alarm signalling, device triggering, remote control of automation circuits

How to use

Mount the module in a dry location inside a control panel or enclosure with good radio reception to the Ajax hub. Connect wired detectors to the input terminals following the sensor type (normally open or normally closed) and wire the external sirens or control circuits to the relay outputs. Enroll the device in the Ajax system using the hub’s device addition procedure so the module receives its address and reporting parameters. After enrollment, configure input and output behavior, alarm reporting and actions through the system management interface.

Recommendations

Place the module where it maintains reliable radio contact with the hub and avoid mounting near large metal objects or sources of electromagnetic interference. Verify sensor wiring and polarity before powering the module, and test all inputs and outputs after configuration to confirm correct alarm reporting and switching behavior.