Description
TYCO
THORN
S271i+
EPG TERMINAL PCB CARD
125-165-353
ASSY 125-585-744
120-347-170
S2711+ ASSY 125-585-744
S271F+ ASSY 125-585-766
The Tyco Thorn S271i+ EPG Terminal PCB Card is a printed circuit board assembly designed for use within the Thorn S271i+ series fire alarm control panels. Serving as the terminal interface board, it manages the electrical connectivity and signal routing between the panel’s internal electronics and its external field wiring, forming a critical part of the fire detection and alarm system’s core architecture. Reliable operation of this card is essential to the overall integrity of the fire alarm system onboard, making it a key maintenance and replacement component for vessels relying on Thorn fire detection infrastructure.
Key Features
✓ Functions as the EPG terminal PCB interface card within the Thorn S271i+ fire alarm panel assembly, supporting internal signal and wiring termination.
✓ Compatible with S271i+ and S271F+ panel assemblies (ASSY references 125-585-744 and 125-585-766); exact voltage ratings and response parameters are subject to confirmation against panel configuration.
✓ Designed for installation within the fire alarm control panel enclosure — a controlled indoor mounting environment typical of bridge, accommodation, or main fire station locations onboard.
✓ Replacement of this PCB card supports continuity of SOLAS-required fire detection system functionality, helping to restore panel operability following board-level failure.
✓ Service and replacement suitability should be verified against the specific panel assembly variant and firmware revision in use onboard; cross-reference part number 125-165-353 when ordering.
Marine Applications
✓ Merchant vessels and cargo ships equipped with Tyco Thorn S271i+ series fire alarm control panels requiring PCB-level component replacement.
✓ Passenger ferries and cruise vessels where continuous fire alarm panel availability is a regulatory and operational requirement.
✓ Offshore platforms and support vessels maintaining Thorn-based fire detection systems in accommodation and machinery spaces.
✓ Naval auxiliary and government vessels using Thorn fire alarm infrastructure where panel-level repairs are preferred over full unit replacement.
✓ Drydock and refit scenarios where fire alarm panels are being overhauled, upgraded, or restored to full operational condition.
Why Marine Engineers Choose
Marine engineers specify the Thorn S271i+ EPG Terminal PCB Card because it allows targeted, board-level repair of an established fire alarm panel platform — avoiding costly panel replacement while restoring full system functionality quickly and efficiently.
Ideal For
Suitable for fleet operators, ship managers, and vessel owners operating commercial cargo ships, tankers, passenger vessels, offshore support vessels, and naval auxiliaries running Tyco Thorn S271i+ series fire alarm systems.
Technical Support
Technical support is available for this PCB card and the broader Thorn S271i+ fire alarm system. Assistance covers onboard installation guidance, board-level fault diagnosis, and remote troubleshooting to help restore panel operation with minimal downtime.
