Lifesafety Power FPO250/250-3C83D8PE12M/P24-A LSP Product ProWire Power Supply

Overview

The FPO250/250-3C83D8PE12M/P24-A is a 500W dual-voltage power distribution unit built for Mercury ProWire access control and door strike systems. It supplies 24 relay lock outputs and 24 auxiliary control outputs — the configuration you need when integrating multiple electric strikes, magnetic locks, and auxiliary devices across a building or facility. Input rated at 120 VAC, this unit handles the power aggregation for mid- to large-scale lock and reader control without requiring separate power runs to every door.

Compatibility

Designed as part of the Lifesafety Power Mercury ProWire family and the broader LSP Product ProWire ecosystem. The 24 relay outputs integrate with door strike control modules, magnetic locking hardware, and access point signaling. Confirm your ProWire panel and reader architecture before deployment — relay output assignment depends on your control logic and wiring topology.

Installation Notes

Input voltage is 120 VAC only — do not attempt 240V supply without a step-down transformer. The dual-output configuration (24 relay locks + 24 auxiliary) requires careful wire bundling and labeling to prevent strikes and readers from cross-triggering. Relay contacts are dry — they switch the circuit but do not source power themselves, so each strike or lock must have its own 24VDC secondary supply or inline power. Budget installation time for terminal block verification and relay assignment documentation; misalignment is a common commissioning delay in multi-door deployments.