Ajax EN54 Internal Battery (72h) — 127879.324.BL

• Rechargeable Li‑ion internal backup battery (10 Ah, nominal 7.4 V) designed for Ajax EN54 Fire Hub Jeweller and EN54 Fire ReX Jeweller.
• Provides up to 72 hours autonomous operation per EN 54‑4 requirements; hot‑swappable with a special tool to allow replacement without interrupting the control panel.
• Intended for internal installation only (IP20). Not a general‑purpose external battery.

Key benefits: reliable EN54‑compliant backup for fire alarm control equipment, long autonomous run time for prolonged power outages, compact form factor for internal installation and maintenance‑friendly hot‑swap design.

Use cases: fitted as the internal backup battery for Ajax EN54 Fire Hub Jeweller and EN54 Fire ReX Jeweller control panels in commercial and residential fire alarm installations. Suitable for installers and system integrators requiring EN54‑rated backup.

Safety & compliance: Meets EN 54‑4 backup battery requirements where specified by the compatible Ajax EN54 control panels. For indoor use only (IP20). Install, replace and service only in accordance with the Ajax installation manual and local regulations; battery replacement should be performed by a qualified installer. Dispose of battery in accordance with local battery waste regulations.

Manual & datasheet: https://cdn.dynamictech.uk/dynamictech/uploads/manuals/ITM006076_2.pdf