Lifesafety Power FPO75-B100C4PD8PE4H 75W Secondary Power Supply Board
Overview
The FPO75-B100C4PD8PE4H is a 75W secondary power supply board designed for access control and security subsystems requiring distributed 12VDC or 24VDC power. The selectable dual-voltage output (6A at 12V or 3A at 24V) supports both lock controllers and auxiliary endpoints. An adjustable 5–18VDC secondary output (4A max, class 2 power limited) enables independent circuit isolation for mixed-voltage loads. This form factor fits integrations where centralized power infrastructure must serve door locks, readers, sensors, and auxiliary monitoring devices across a single controlled enclosure.
Output and Control Features
Four relay lock control outputs operate at class 2 power-limited levels (2.5A per output maximum), delivering supervised power to electromagnetic locks and strike mechanisms without requiring additional relay modules. Eight auxiliary DC outputs (2.5A per output, class 2 limited) distribute low-current power to sensors, alarm monitoring circuits, and logic devices. This distributed architecture eliminates daisy-chaining and reduces single-point failure risk across managed access points. The board ships pre-installed in a Size 24 enclosure (20W × 24H × 4.5D inches) with Honeywell Pro-Watch backplate integration, allowing direct cabinet mounting without frame rework.
Integration Constraints
Class 2 power limiting on all outputs ensures life-safety code compliance in applications requiring energy-restricted circuits. The adjustable secondary output requires field configuration during commissioning—verify voltage setting matches downstream reader and sensor specifications before energizing. Input voltage and total load current capacity across all outputs must be calculated at design time; exceeding 75W aggregate demand will trip protection or degrade lock strike performance. The Honeywell Pro-Watch backplate indicates OEM compatibility with Honeywell control panels; confirm your panel revision supports this board before ordering.
