Sargent LSP-12-24 Power Supply...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$845.00
$532.82
Sargent LSP-12-24 Power Supply Selectable Output

Sargent LSP-12-24 Power Supply Selectable Output

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Model: LSP-12-24

In Stock (leaves warehouse same day if ordered before 3pm ET)

$845.00
$532.82
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Sargent LSP-12-24 Power Supply Selectable Output

The Sargent LSP-12-24 Power Supply is a selectable-voltage power supply designed for access control and fire alarm systems

Selectable output of either 12V at up to 6A or 24V at up to 3A

 

Key Specifications & Features

• Output Voltage: Field-selectable 12VDC @ 6 Amps or 24VDC @ 3 Amps.
• Legacy Replacement: Direct replacement for older Sargent models 3520, 3521, 3540, and 3541.
• Fire Alarm Interface: Built-in fire alarm interface for safety integration.
• Battery Charging: Optional battery backup charging capability (battery sold separately).
• Enclosure: Boxed steel power supply unit with key lock.
• Listings: UL Listed.

Why Choose Sargent Quality?

Sargent 700 Series retrofit components deliver professional-grade compatibility solutions engineered for demanding commercial applications where reliable core integration is essential. These precision-manufactured parts ensure seamless compatibility with existing hardware while maintaining the security and performance standards expected from Sargent products.

Product Specs

Product Type:
Power Supply
Product Group:
Mechanical Locks
Product Subgroup:
Parts and Accessories
Subcategory:
Parts and Accessories
Parts and Accessories Type:
Power Supply
Product Attribute:
Parts and Accessories
Product Category:
Mechanical Locks
Department:
Door Hardware

Sargent LSP-12-24 – Frequently Asked Questions

1) Can the Sargent LSP-12-24 power supply run both 12V and 24V locking hardware?
Output voltage on the LSP-12-24 is field-selectable: 12VDC at up to 6 amps, or 24VDC at up to 3 amps. You pick one setting for the whole unit, so every device fed from it has to run on the same voltage. Mixing 12V strikes and 24V electrified exit devices off one LSP-12-24 is not possible. Total current draw also has to stay inside the amperage for the voltage you select, so size your device load against 6A at 12V or 3A at 24V before you commit.
2) Will the Sargent LSP-12-24 replace an older Sargent 3520 or 3540 power supply?
Yes. The LSP-12-24 is stated as a direct replacement for the older Sargent 3520, 3521, 3540 and 3541 power supplies. That makes it the straight swap when one of those legacy units fails in an existing Sargent access control install, with the added benefit that one part number now covers both the 12V and 24V legacy units because output is selectable.
3) Does the Sargent LSP-12-24 power supply have a fire alarm input for releasing locks on alarm?
It does. The LSP-12-24 includes a built-in fire alarm interface, so the panel's alarm contact can drop power to the connected locking devices for egress on alarm. That is what lets it feed electrified exit device trim, electric strikes or mag locks on an opening where code requires release on fire alarm, without adding a separate relay module. The unit is UL Listed.
4) Does battery backup come with the Sargent LSP-12-24, or do I order the battery separately?
The LSP-12-24 has optional battery backup charging capability built in, but the battery itself is not included and is ordered separately. If the openings need to stay powered through an outage, budget for batteries sized to the voltage you select on the board.
5) How many electric strikes or electrified devices can one Sargent LSP-12-24 power?
Work it from the amperage, not the device count. The LSP-12-24 delivers 6 amps at 12VDC or 3 amps at 24VDC, so add up the inrush and holding current of every device on the circuit and keep the total under that figure for the voltage you select. Continuous-duty devices hold far less current than their inrush, so inrush is usually the limiting number on a multi-door install.
6) Is the Sargent LSP-12-24 power supply enclosed, and can it be locked in a public corridor?
The LSP-12-24 ships as a boxed steel power supply unit with a key lock on the enclosure, so the board and any backup batteries stay behind a locked steel cover. That suits mounting in an electrical room, closet or above a ceiling in a school, hospital or multi-family building where tampering is a concern.
7) Is the Sargent LSP-12-24 only for access control, or can it serve a fire alarm system too?
Both. It is a selectable-voltage power supply built for access control and fire alarm systems, with the alarm interface on board. Common use is powering electrified door hardware on a card-reader opening while taking a release signal from the fire alarm panel.
How fast can I get the Sargent LSP-12-24 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sargent LSP-12-24 come with a warranty?
Absolutely. The Sargent LSP-12-24 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sargent LSP-12-24?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Sargent LSP-12-24 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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