Accessory
AJAX EN54 internal backup battery (72 hours) white
The internal backup battery keeps the EN54 Fire Hub or Fire ReX running for 72 hours during a power failure, so the fire alarm system remains available.
The battery is fitted inside the device and is the back-up power supply prescribed by Ajax for the Fire Hub and the Fire ReX in the EN54 range.
Features
Why this back-up battery
72-hour backup
Keeps the control panel or range extender running during a mains power failure.
Prescribed battery
The correct, compatible battery for the EN54 Fire Hub and Fire ReX.
Internal installation
Fits neatly inside the device, no separate enclosure needed.
Specifications
Technical specifications
| Function | |
| Type | Internal back-up battery (emergency power) |
| Bridging | Up to 72 hours of autonomous operation |
| Compatible with | EN54 Fire Hub and EN54 Fire ReX |
| Mounting | |
| Placement | Inside the device |
| Note | Does not replace the mains power supply; serves as back-up |
Scope of delivery
In the box
EN54 internal backup battery (72 hours)
The battery only.
Documentation
Brief installation instructions.
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