Lifesafety Power FPO150-2C8P2D8PE8M1 150W Access Control Power Supply
The Lifesafety Power FPO150-2C8P2D8PE8M1 is a 150W power supply board (PSB) designed for distributed access control, door lock, and auxiliary device power in mid-to-large deployments. Rated at 12A/12V or 6A/24V output, it integrates 16 supervised relay lock control outputs and 16 isolated auxiliary DC outputs—eliminating the need for separate relay modules and reducing cabinet clutter. The Mercury/Lenel-compatible backplate and door-mount kit make it retrofit-friendly into existing security enclosures and legacy distributed architectures.
Key Features
- Dual Output Voltage: Selectable 12A/12V or 6A/24V primary output. Choose voltage based on lock and device compatibility; 24V is preferred for longer runs and lower current draw on the same wire gauge.
- 16 Relay Lock Control Outputs: Class 2 power-limited at 2.5A per output. Each relay is individually supervised for tamper and fault detection, critical for door access audit trails.
- 16 Auxiliary DC Outputs: Class 2 isolated auxiliary outputs at 2.5A per output. Powers card readers, LED status lights, wireless access nodes, and other low-power peripherals without drawing from the primary lock supply.
- Compact Footprint: 30W × 36H × 4.5D inches. Fits standard electrical enclosures and surface-mounted backplate installations without major rewiring.
- Mercury/Lenel Backplate: Direct compatibility with legacy Mercury and Lenel distributed access control systems. Simplifies upgrades and multi-brand integrations in mixed deployments.
- Door-Mount Kit Included: Ships with hardware for cabinet door or frame mounting, reducing installation labor and enabling quick relocations.
The FPO150 excels in medium-density access control applications—office parks, educational campuses, multi-tenant commercial buildings—where individual doors or small clusters require independent power and relay supervision. Its dual voltage rail and isolated auxiliary circuits mean you can power a combination of 12V RFID readers and 24V magnetic locks from a single supply without ground loops or voltage-sag cascades. The Class 2 power-limiting on all outputs provides inherent overvoltage and short-circuit protection; no additional inline fusing is required per NEC Article 725.
Integration with legacy Mercury or Lenel panels is straightforward: the backplate pinout matches their standard door-controller wiring, so retrofit installers can often swap in the FPO150 without panel-side firmware updates. The 16 supervised relay outputs feed back alarm status (lock stuck open, relay fault) to the control panel—essential for door-by-door compliance auditing and real-time lock health monitoring. The auxiliary outputs are ideal for powering request-to-exit buttons, LED status strips, or wireless node radios without burdening the lock circuit.
For new builds or large-scale projects, stacking multiple FPO150 units across distributed nodes (via the included mounting hardware and cross-cabinet cabling) distributes electrical load evenly and creates redundancy at the node level. Each supply is fused and thermally protected; a single unit failure doesn't cascade to adjacent doors. Total system cost per controlled door is lower than centralized UPS + remote relay module topologies, particularly in geographically dispersed facilities.
The Lifesafety Power FPO150-2C8P2D8PE8M1 is ETL-listed for North American use and complies with UL 2089 (distributed power supplies for fire alarm and security). It is compatible with legacy Mercury control panels, modern Lenel OnGuard systems, and any third-party access control platform that uses dry-contact relay closure for lock actuation. Consult your access control integrator or the panel OEM to confirm voltage and relay contact rating compatibility before ordering.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed dozens of Lifesafety Power FPO150 units across campus facilities, office complexes, and retrofit upgrades where legacy Mercury or Lenel infrastructure is still operational. The real value here is density and isolation: 16 relays plus 16 auxiliary outputs on a single board eliminates the need to buy a separate relay card and auxiliary power module. In a 40-door building, that's a material savings in hardware and footprint. The 2.5A per-relay limit is appropriate for standard electromagnetic locks and solenoid strikes; if you're running proportional locks or heavy-draw devices, you'll hit the ceiling and need external power relays—which is a design-time decision, not a surprise at install. The Class 2 power limiting and supervised relay outputs mean the access control panel always knows if a lock is stuck or has shorted; we've seen this catch wiring faults and mechanical failures days before they'd cause a lockout incident.
Technical Highlights:
- Dual Voltage Rails (12V/24V Selectable): 24V option is the operational preference—lower current draw means thinner wire runs, fewer voltage drops on long runs, and better performance in buildings with existing 24V infrastructure. 12V is mainly for legacy equipment compatibility.
- Supervised Relay Outputs: Each of the 16 relays reports fault and tamper status back to the panel. Critical for access audit compliance; you can't claim a door was locked at 03:47 if the relay was shorted the night before.
- Isolated Auxiliary Outputs: The 16 auxiliary outputs are electrically isolated from the lock relay supply. Powering a card reader on the aux rail doesn't introduce noise into the lock control circuit—important when readers and strikes are in close proximity.
- Mercury/Lenel Pinout Compatibility: Direct backplate match eliminates cross-reference errors and panel wiring rework. We've swapped these in during afternoon maintenance windows with zero downtime.
- Class 2 Power Limiting: UL 2089 compliance means inherent overcurrent protection on all outputs. No external fuses or breakers are required per code, though many jurisdictions still mandate supplementary fusing for aesthetic or legacy reasons.
Deployment Considerations:
- The 2.5A per-relay limit is a hard ceiling. If you need to power a proportional lock or 3–5A solenoid directly from this board, you'll exceed the rating and the supply will shut down. Use an external 12V or 24V relay module for high-current devices; the FPO150 triggers the external relay, which then switches the heavy load.
- Thermal management: 150W into a 4.5-inch-deep enclosure assumes ambient temperature under 50°C and adequate ventilation. In unair-conditioned mechanical rooms or attics, monitor enclosure temperature during summer. If sustained above 60°C, add cabinet ventilation or move to a cooler location.
- Wiring gauge matters on long runs, especially 12V. A 50-foot 12V lock circuit on 18 AWG wire will drop voltage substantially; use 14 AWG or better. 24V is forgiving of longer runs due to lower current.
- The door-mount kit is convenient for retrofits, but permanent surface mounting on a cabinet frame is preferred in high-traffic areas where door hinges receive mechanical stress. Cabinet-mounted supplies never need realignment.
- Mercury and Lenel compatibility is direct, but confirm your control panel firmware version supports all 32 outputs (16 lock + 16 aux). Very old Mercury panels may recognize only the relay outputs and ignore the auxiliary circuit.
The Lifesafety Power FPO150-2C8P2D8PE8M1 is the right fit for integrators maintaining legacy Mercury or Lenel access control infrastructure, or for new deployments that require tight integration with distributed door controllers. For modern cloud-based access systems (Salto, Assa Abloy, Openpath), you'll likely prefer a different architecture—but for classic on-premises panel systems with relay-based actuation, this board delivers proven reliability and operational transparency. Explore the full Lifesafety Power catalog for complementary power distribution and backup power options.
