Looking for the best fire alarm interface power supplies? We’ve tested and reviewed the top 10 options to help you find the perfect match for your safety needs.
Fire alarm systems need reliable power supplies to work well. These devices keep your safety systems running smoothly. They are easy to use and install, making them a great choice for any setup.
We’ve tested and reviewed the best fire alarm interface power supplies for you. Our guide will help you find the perfect match for your needs, ensuring safety and peace of mind.
List of Top 10 Fire Alarm Interface Power Supplies
| Image | Title | Best For | Price |
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Altronix AL125UL Multi-Output Power Supply Charger with Fire Alarm Interface, Access Control Trigger Input, 12VDC or 24VDC Selectable Outputs, Two (2) Class 2 Rated Power Limited Outputs |
The Altronix AL125UL is perfect for anyone needing a reliable power supply for access control systems or fire alarm interfaces. It’s ideal for businesses or buildings that require fail-safe protection and automatic battery backup during power outages. |
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LifeSafety Power FPO75-E1 FlexPower Power Supply/Charger Module, Network Ready, 75W, Fire Alarm Interface, 6A/12V or 3A/24V, 120/230 VAC Input, 12/24 VDC Output, 0.69A Input Current, Wall-Mount |
The LifeSafety Power FPO75-E1 FlexPower Power Supply/Charger Module is perfect for anyone needing a reliable, flexible power solution. It’s ideal for fire alarm systems, access control, or security setups that require modular power management and fail-safe/fail-secure options. |
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ALTRONIX AL400ULM 5 Output; FIRE’ACCESS Interface, Power SUPPLY’CHARGER, UL’CUL |
This product is perfect for engineers, technicians, and facilities managers who need a reliable power supply with UL/CUL certification for safety-critical systems. It’s ideal for 5-output applications requiring secure, fire-resistant connections. |
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Von Duprin PS900 Series High Inrush Model Class 2 Power Supply, 120/240 VAC, 50/60 Hz Universal Input, Fire Alarm Interface Board, 4 Relay Output Board, 4 Amp DC at 12/24 VDC Output |
The Von Duprin PS900 Series is perfect for building managers and security professionals who need reliable power for panic devices and fire alarm systems. Its high inrush current and overload protection make it ideal for critical safety applications. |
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Altronix ACM AL600ULACM Proprietary Power Supply 8 FUSE OUT ACCESS PWR SPL W/FACP DISC12VDC OR 24VDC/6A |
This power supply is perfect for pros who need steady, safe, and strong power for access systems. It’s great for anyone who wants simple, clean, and reliable control. |
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Schlage Electronics PS906 6-Amp Power Supply with 4-Relay Output Board and Fire Alarm Interface Board, 12/24VDC Output, 120/240VAC at 50/60 Hz Input |
This product is perfect for installers and building managers who need steady, safe power for access systems. It’s also great for anyone who wants a simple, flat‑mount setup that keeps devices running without trouble. |
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New Simplex 565-220 Power Supply Interface Assy Fire Alarm Control Panel Board |
New Simplex 565-220 Power Supply Interface is perfect for installers who need a simple and reliable part for their fire alarm control panel board. |
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Securitron BPS-12-3 Power Supply 3 Amp 12Vdc, Satin Aluminum |
This Securitron BPS‑12‑3 is made for small businesses and home offices that need a safe, reliable power backup. Its rugged steel case, LED status lights, and easy slide switches let you keep critical devices running during power cuts. |
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Securitron BPS-24-4 Boxed Power Supply, 24V DC, 6 Ampere |
The Securitron BPS-24-4 is perfect for anyone needing areliable power supply for security systems. It’s ideal for buildings that require fire alarm integration and easy monitoring. |
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Sargent 3540 Power Supply, 24 VDC, 2 Amps (Pack of 1) |
The Sargent 3540 Power Supply is perfect for anyone needing reliable power for security systems, fire alarms, or emergency lighting. It’s ideal for keeping critical devices running smoothly, even during power outages. |
Detailed Reviews
Discover the top 10 Fire Alarm Interface Power Supplies, carefully selected for reliability and performance. Each product is reviewed to ensure it meets your needs, whether you prioritize safety, efficiency, or affordability. Dive in to find the perfect power supply that keeps your systems running smoothly and securely.
1. Altronix AL125UL Multi-Output Power Supply Charger with Fire Alarm Interface, Access Control Trigger Input, 12VDC or 24VDC Selectable Outputs, Two (2) Class 2 Rated Power Limited Outputs

The Altronix AL125UL gives steady power. It helps keep locks and systems on. It is easy to use.
It has 12VDC or 24VDC output. It also has short circuit and heat protection.
It can charge batteries and switch to backup power fast. It also has a fire alarm disconnect for safe control.
| Pros | Cons |
|---|---|
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Perfect For:
The Altronix AL125UL is perfect for anyone needing a reliable power supply for access control systems or fire alarm interfaces. It’s ideal for businesses or buildings that require fail-safe protection and automatic battery backup during power outages.
Ready to Purchase?
2. LifeSafety Power FPO75-E1 FlexPower Power Supply/Charger Module, Network Ready, 75W, Fire Alarm Interface, 6A/12V or 3A/24V, 120/230 VAC Input, 12/24 VDC Output, 0.69A Input Current, Wall-Mount

The LifeSafety Power FPO75‑E1 is a wall‑mount power supply. It gives 75 W from 120/230 VAC to 12 V or 24 V DC. It fits fire alarm systems with a FAI interface.
It has multiple outputs for system power, lock control, and accessories. You can set it to fail‑safe or fail‑secure mode. Relays can be delayed with PowerCom.
The unit is modular and network ready. It is easy to install and use.
| Pros | Cons |
|---|---|
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Perfect For:
The LifeSafety Power FPO75-E1 FlexPower Power Supply/Charger Module is perfect for anyone needing a reliable, flexible power solution. It’s ideal for fire alarm systems, access control, or security setups that require modular power management and fail-safe/fail-secure options.
Ready to Purchase?
3. ALTRONIX AL400ULM 5 Output; FIRE’ACCESS Interface, Power SUPPLY’CHARGER, UL’CUL

The ALTRONIX AL400ULM is a reliable power solution. It has five outputs for multiple devices. This unit is UL and CUL listed, ensuring safety.
It features a fire and access interface, making it ideal for security systems. The power supply and charger keep your devices running smoothly.
With its compact design, this product is easy to install. It provides efficient power management for various applications. A trusted choice for professionals.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for engineers, technicians, and facilities managers who need a reliable power supply with UL/CUL certification for safety-critical systems. It’s ideal for 5-output applications requiring secure, fire-resistant connections.
Ready to Purchase?
4. Von Duprin PS900 Series High Inrush Model Class 2 Power Supply, 120/240 VAC, 50/60 Hz Universal Input, Fire Alarm Interface Board, 4 Relay Output Board, 4 Amp DC at 12/24 VDC Output

The Von Duprin PS900 Series is a high-inrush power supply built for electrified panic devices. It handles 120/240 VAC and 50/60 Hz with ease.
It offers low voltage DC, regulated and filtered power. It includes AC overload protection and isolated SPDT contacts.
This model features two polarized connectors and a fused primary input. It also has a high voltage protective cover for added safety.
| Pros | Cons |
|---|---|
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Perfect For:
The Von Duprin PS900 Series is perfect for building managers and security professionals who need reliable power for panic devices and fire alarm systems. Its high inrush current and overload protection make it ideal for critical safety applications.
Ready to Purchase?
5. Altronix ACM AL600ULACM Proprietary Power Supply 8 FUSE OUT ACCESS PWR SPL W/FACP DISC12VDC OR 24VDC/6A

The Altronix ACM AL600ULACM is a reliable power supply designed for security systems. It offers 12VDC or 24VDC output with a 6A capacity, ensuring stable power for your devices.
This unit includes 8 fuse outputs and FACP disconnect, making it easy to manage. It comes with a 1-year warranty, giving you peace of mind.
| Pros | Cons |
|---|---|
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Perfect For:
This power supply is perfect for pros who need steady, safe, and strong power for access systems. It’s great for anyone who wants simple, clean, and reliable control.
Ready to Purchase?
6. Schlage Electronics PS906 6-Amp Power Supply with 4-Relay Output Board and Fire Alarm Interface Board, 12/24VDC Output, 120/240VAC at 50/60 Hz Input

The Schlage Electronics PS906 is a 6-amp power supply designed for access control systems. It works with 120 to 240V input and supports 12 or 24V devices. This unit is easy to install and use.
It includes a four-relay output board to connect multiple devices. The fire alarm interface board links a fire alarm to the system. Both boards are integrated for seamless operation.
The flat mounting design saves space and eliminates the need for racks. LED indicators show input and output voltages for quick monitoring. This unit ensures safe and efficient power management.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for installers and building managers who need steady, safe power for access systems. It’s also great for anyone who wants a simple, flat‑mount setup that keeps devices running without trouble.
Ready to Purchase?
7. New Simplex 565-220 Power Supply Interface Assy Fire Alarm Control Panel Board

The New Simplex 565-220 Power Supply Interface Assy is a brand new fire alarm control panel board. It is designed to work with fire alarm systems. This board ensures reliable power supply for your safety devices.
It is a key component for fire alarm systems. The board is easy to install and use.
This fire alarm control panel board is a must-have for any fire alarm system. It provides peace of mind and safety. The New Simplex 565-220 is a reliable and efficient solution.
| Pros | Cons |
|---|---|
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Perfect For:
New Simplex 565-220 Power Supply Interface is perfect for installers who need a simple and reliable part for their fire alarm control panel board.
It fits well for building managers who want a quick upgrade.
Ready to Purchase?
8. Securitron BPS-12-3 Power Supply 3 Amp 12Vdc, Satin Aluminum

The Securitron BPS-12-3 Power Supply is a reliable and durable device. It comes in a rugged steel enclosure with a satin aluminum finish.
This power supply has LEDs to monitor zone status, slide switches for easy control, and terminals for fire alarm relay connection. It provides 3 Amp 12Vdc power and ensures safety with its fire alarm release feature.
| Pros | Cons |
|---|---|
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Perfect For:
This Securitron BPS‑12‑3 is made for small businesses and home offices that need a safe, reliable power backup. Its rugged steel case, LED status lights, and easy slide switches let you keep critical devices running during power cuts.
Ready to Purchase?
9. Securitron BPS-24-4 Boxed Power Supply, 24V DC, 6 Ampere

The Securitron BPS-24-4 is a boxed power supply designed for 24V DC systems. It delivers 6 amps of power, making it reliable for various applications. Its rugged steel enclosure ensures durability and protection.
This unit features LEDs to monitor zone status, showing voltage or no voltage. Slide switches allow easy connection or disconnection of the load from power. These features make it user-friendly and efficient.
It includes terminals for fire alarm relay connection, ensuring safety. Upon fire alarm activation, all devices can be released quickly. The Securitron BPS-24-4 combines functionality and safety in one compact unit.
| Pros | Cons |
|---|---|
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Perfect For:
The Securitron BPS-24-4 is perfect for anyone needing areliable power supply for security systems. It’s ideal for buildings that require fire alarm integration and easy monitoring.
Ready to Purchase?
10. Sargent 3540 Power Supply, 24 VDC, 2 Amps (Pack of 1)

The Sargent 3540 Power Supply is a reliable and efficient solution for your power needs. It delivers 24 VDC at 2 Amps, ensuring stable power for your devices. This unit comes in a pack of 1, making it easy to integrate into your setup.
It features integral battery charging, keeping sealed lead acid gel/cell batteries fully charged during line voltage failures. The fused line voltage input and four DC outputs provide safety and flexibility. Each circuit has a slide switch for individual control and an LED to show power status.
In case of a DC short, the issue is contained to the affected area, preventing widespread problems. A fire alarm interface is included as standard, adding an extra layer of safety to your system.
| Pros | Cons |
|---|---|
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Perfect For:
The Sargent 3540 Power Supply is perfect for anyone needing reliable power for security systems, fire alarms, or emergency lighting. It’s ideal for keeping critical devices running smoothly, even during power outages.
Ready to Purchase?
Buying Guide
Fire alarm systems need reliable power supplies to keep you safe. Choosing the right one ensures your system works when you need it most.
Here’s what to consider when buying a fire alarm interface power supply:
- Power Output: Check if it matches your system’s needs. Look for 12VDC or 24VDC options.
- Safety Features: Choose one with short circuit and overheat protection for added safety.
- Backup Power: Ensure it has battery charging and backup power for emergencies.
- Ease of Use: Pick a model that’s easy to install and operate.
- Compatibility: Make sure it works with your fire alarm system and other devices.
- Durability: Look for a rugged design that lasts long and handles tough conditions.
- Warranty: A good warranty gives you peace of mind and protects your investment.
- Size and Design: Choose a compact unit that fits your space easily.
- Network Ready: Opt for a network-ready model if you need remote monitoring.
- Price: Balance cost with features to get the best value for your money.
With these factors in mind, you’ll find the perfect fire alarm interface power supply for your needs. Stay safe and enjoy peace of mind!