

Simplex 742-342 System Power Supply Board for 4100U & 4100ES Panels
£659.74
The Simplex 742-342 System Power Supply Board (566-071) is a genuine replacement component designed for use with Simplex 4100U and 4100ES fire alarm control panels, ensuring reliable system power performance and long-term operational integrity.
- Description
- Additional information
Description
The Simplex 742-342 System Power Supply Board (also known by part number 566-071) is an essential replacement component for Simplex 4100U and 4100ES fire alarm control panels. This board is responsible for delivering regulated and consistent power to the fire panel system, supporting both normal operation and critical alarm functionality.
Built to Simplex’s high-performance standards, the 742-342 board ensures your life safety system remains dependable and compliant with fire protection requirements. Ideal for system maintenance, upgrades, or fault repairs, this original manufacturer power supply board is designed for seamless compatibility and quick installation within existing 4100-series enclosures.
Key Features:
- Genuine Simplex replacement part
- Compatible with Simplex 4100U and 4100ES fire alarm panels
- Ensures stable and reliable system power
- Simple installation for servicing or upgrading existing panels
- Part number: 742-342 / 566-071
- Supports essential life safety functionality
- Designed to meet rigorous industry standards
Keep your fire alarm system running efficiently with the trusted performance of the Simplex 742-342 system power supply board.
Additional information
Weight | 4 lbs |
---|---|
Dimensions | 6.00 × 6.00 × 2.00 in |
Brand | Simplex |
Manufacturer | Honeywell International |

Simplex 742-342 System Power Supply Board for 4100U & 4100ES Panels
£659.74
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