Von Duprin PS902 Base Power Su...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$389.00
$257.30
Von Duprin PS902 Base Power Supply 2A 12/24 VDC open enclosure showing power supply board, field-selectable voltage, for access control applications

Von Duprin PS902 Base Power Supply 2A 12/24 VDC Field Selectable for Access Control

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Model: PS902
$389.00
$257.30
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$389.00
$257.30
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Von Duprin PS902 Power Supply - 2A, 12/24 VDC Field Selectable

Commercial-Grade Regulated DC Power for Electrified Door Hardware & Access Control

The Von Duprin PS902 delivers 2 amps of continuous regulated DC output with field-selectable 12 VDC or 24 VDC, purpose-built for Von Duprin electrified exit devices, electric strikes, magnetic locks, and access control systems. A single unit covers both common device voltages, eliminating the need for separate supplies on mixed-voltage installations. Grade 1 commercial rating makes it appropriate for life-safety and security applications in commercial, institutional, and multi-family environments.

The PS902 is available as a base unit or configured with optional distribution boards (2-relay, 4-relay independently controlled, 4-relay with integrated logic, 8-output PTC protected), fire alarm relay (FA), battery backup kit (BBK), and key lock cover - select the combination that matches your system design.

Key Features

  • 2A Regulated DC Output: Continuous regulated output protects sensitive electronics from voltage fluctuations and ensures stable performance across all connected devices.
  • Field-Selectable 12/24 VDC: Voltage selected at the unit during installation - no separate supply needed for 12 V or 24 V devices on the same job.
  • Optional Distribution Boards: Add a 2-relay output board, 4-relay independently controlled board, 4-relay board with integrated logic, or 8-output PTC-protected board to distribute and protect downstream circuits.
  • Fire Alarm (FA) Relay Option: Integrates fire alarm input to release electrified locking devices on alarm activation, supporting life-safety code compliance.
  • Battery Backup Kit (BBK) Option: Maintains power to connected devices during AC outages, critical for continuous access control and egress compliance.
  • Key Lock Cover Option: Restricts unauthorized access to the power supply enclosure and voltage selection switch.
  • Grade 1 Commercial Rating: Rated for demanding commercial and institutional security installations.

Technical Specifications

  • Output Current: 2A continuous regulated DC
  • Output Voltage: 12 VDC or 24 VDC, field selectable
  • Grade: Grade 1
  • Application: Commercial / Institutional
  • Compatible Devices: Von Duprin electrified exit devices, electric strikes, magnetic locks, access control panels

For input voltage, enclosure dimensions, UL listing details, and wiring diagrams, refer to the Von Duprin PS902 installation instructions and data sheet.

Typical Applications

  • Commercial office and retail access control systems
  • Educational facility electrified door hardware
  • Healthcare and institutional entry control
  • Multi-tenant residential and mixed-use property access control
  • Government and municipal building security infrastructure
  • Industrial and warehouse facility door control

Product Specs

Product Group:
Electronic Access Controls
Series:
Electrical Products
Grade:
Grade 1
Product Subgroup:
Power Supplies
Subcategory:
Power Supplies
Product Type:
Power Supplies
Commercial/Residential:
Commercial
Product Category:
Electronic Access Controls
Department:
Door Hardware

Von Duprin PS902 – Frequently Asked Questions

1) Will the Von Duprin PS902 run both 12V and 24V devices, or do I need to pick one when I order?
Voltage is set at the unit, not at the factory. The PS902 is field-selectable between 12 VDC and 24 VDC, so one supply covers either. That means on a mixed job where, say, the electric strikes are 12 V and the mag locks are 24 V, you still order one part number and set each supply to what its devices need. What it won't do is put out both voltages at once from a single unit, so a single opening group has to be all one voltage per supply.
2) How many electric strikes or mag locks can a PS902 actually power?
Budget against 2 amps. The PS902 puts out 2A of continuous regulated DC at whichever voltage you select, so add up the holding current of every device on the supply plus the inrush of anything that fires simultaneously, and stay under that. Latch retraction exit devices are the usual trap here, they draw hard on actuation and generally want a supply built for that duty rather than a general 2A unit.
3) What do I have to specify when ordering a Von Duprin PS902?
Four decisions. The base PS902 supply is fixed; beyond that you choose a distribution board (none, 2 relay output, 2 relay with FA, independently controlled relay, independently controlled relays with FA, 4 relay integrated logic, 4 relay integrated logic with FA, 8 PTC protected outputs, 8 PTC protected outputs with FA, or fire alarm relay only), battery backup kit yes or no, and key lock cover yes or no. Every one of those combinations is orderable, so a bare supply with no board and no backup is as valid as a fully loaded one.
4) Which PS902 distribution board should I get for my access control system?
It depends on how the doors are controlled. A 2 relay output board splits power to two switched circuits. The independently controlled relay board lets each output be triggered separately, which is what you want when different readers or panel outputs control different doors. The 4 relay board with integrated logic handles the sequencing on board rather than at the panel. The 8 PTC protected outputs board is the one to pick when you are feeding many devices and want each leg individually current protected so one shorted strike doesn't drop the whole supply. If you only need fire alarm release and no distribution at all, there is a fire alarm relay only configuration.
5) Do I need the FA option on a PS902 for my mag locks, or does the fire alarm panel handle that?
If the supply powers locking devices that have to release on alarm, get the FA version. The fire alarm relay takes the alarm input at the power supply and drops power to the electrified locking hardware when the panel activates, which is how egress is maintained on a mag lock or fail-safe strike. It's available on the 2 relay, independently controlled relay, 4 relay integrated logic, and 8 PTC output boards, and as a fire alarm relay only build with no distribution board. Ordering a non-FA unit and adding it later means changing the board.
6) What happens to my card readers and electric strikes if the building loses power?
Nothing, if you ordered the battery backup kit. The PS902 BBK option maintains power to connected devices through an AC outage so access control and egress hardware keep working. It's available with every distribution board choice and with the bare supply, and it pairs with the key lock cover as well. Without the BBK, the supply is line powered only and the doors revert to whatever their fail-safe or fail-secure state is when power drops.
7) Is the PS902 the right power supply for Von Duprin electrified exit devices?
That's what it was built around. The PS902 is intended for Von Duprin electrified exit devices along with electric strikes, magnetic locks, and access control panels, at 12 or 24 VDC. Carry the current math through though: it's a 2A supply, and motorized latch retraction devices are a different load class. For those, a supply purpose-built for MLR duty is the correct call, such as the BEST RPSMLR2 Series.
8) What is the closest 2 amp 12/24 VDC equivalent to a Von Duprin PS902 from another manufacturer?
The PS902 puts out 2A of regulated DC with field-selectable 12 or 24 VDC. The nearest match on the same two counts is the SDC 632 Series, a 2 amp regulated and filtered low voltage power supply with dual voltage selection. The RCI DKPS-2A is also 12/24VDC at 2A and carries 8 outputs built in, where on the PS902 the 8 PTC protected outputs come from the distribution board option rather than the base unit. Command Access PS204/204B is 2A but at 24VDC only, so it fits a straight 24 V job and not a mixed 12/24 V one.
9) I have more doors than 2 amps will carry. What do I move up to?
The PS902 tops out at 2A continuous regulated output, so a large opening count needs a bigger supply. The SDC 634 Series is a 4 amp regulated and filtered low voltage supply with dual voltage selection, keeping the 12/24 V choice. The Securitron AQL4 is a 12/24VDC switching supply rated 4 amps at 12 V and 3 amps at 24 V. Above that, the BEST PS161-6 is a 6A supply with 120V input and 12/24V output, and the Altronix AL1024ULACMCB runs 24VDC at 10A through 8 PTC outputs from a 115VAC 60Hz input at 4.2A. For 12 V only at high current, the Securitron AQS1210 is 12 VDC at 10 amps.
10) The PS902 is more supply than I need for a single 12 V strike. What is a smaller dual-voltage option?
For a single low-draw device, a 1 amp dual-voltage supply covers the same 12/24 V flexibility as the PS902 without the 2A capacity. The Securitron AQD1 is a switching power supply at 12/24 VDC, 1 amp. The SDC 620 Series is a 1 amp regulated and filtered low voltage supply with dual voltage selection, and the Adams Rite PS-1 is a 1 amp 12/24 VDC regulated supply that includes battery backup, where on the PS902 backup is the BBK option. If 1A is short, the SDC 631 Series sits between at 1.5 amp with dual voltage selection.
11) Can a PS902 run motorized latch retraction exit devices, or does that need a different supply?
Motor-driven latch retraction is a distinct duty from holding an electric strike or maglock. BEST offers the RPSMLR2 Series specifically as a power supply for motorized latch retraction exit devices, and the Command Access PS210 is a UL 6E/CSA linear supply rated 1.5A at 24VDC with boost circuitry for inrush. Delayed egress is its own case again - the BEST PS161-6 is built for delayed egress exit devices at 6A. The PS902 is a 2A regulated 12/24 VDC supply for Von Duprin electrified exit devices, electric strikes, magnetic locks, and access control panels, so confirm the retraction device's current draw against those supplies before substituting either way.
12) Which of these power supplies is not actually a substitute for a PS902?
Several items sit next to the PS902 in a catalog without doing its job. The ROFU 10305-LA/10306-LA is a tamper resistant power transfer hinge rated 1.5A at 42V - it carries current through the door edge rather than generating DC. The Command Access CAT Field Tester is a portable 12-24VDC supply that runs off DeWalt, Makita and Milwaukee batteries, made for bench and field testing, not permanent installation. The ROFU 9126T is a plug in mini power supply, 12 VDC at 1.5A with time delay, a plug-in rather than a hardwired enclosure. The Securitron BPSS is a boxed solar power supply. The PS902 is a hardwired 2A regulated 12/24 VDC unit in an enclosure with optional key lock cover.
13) Is there a way to keep tenants or staff out of the PS902 enclosure?
The key lock cover option does that. It restricts access to the power supply enclosure and, importantly, to the voltage selection switch, so nobody can flip a 24 V circuit to 12 V or pull a fuse. It's worth specifying in multi-tenant buildings, schools, and anywhere the supply sits in a shared closet rather than a locked IT room. Available on every board and backup combination.
14) Is the Von Duprin PS902 Grade 1, and does that matter for a school or hospital spec?
Grade 1 is the rating the PS902 carries, and it's specified as commercial equipment. That's the grade institutional specifications normally call for on life-safety and security hardware, which is why it turns up in school, healthcare, and government access control packages. If your drawing calls out Grade 1 for the power supply on the electrified opening schedule, this meets it.
15) Can I standardize on one power supply across a portfolio of buildings with different door hardware?
That's a reasonable use for the PS902. Because voltage is selected in the field rather than at order time, and because the same base unit takes any of the distribution board, fire alarm relay, and battery backup combinations, a property manager or facilities group can stock one supply and configure it per opening. The practical limit is current: each unit is good for 2A, so buildings with heavy device counts need multiple supplies or a larger unit.
16) What is the difference between a PS902 with a fire alarm relay and a standalone logic controller like the Detex 10-800?
On the PS902 the fire alarm relay is ordered as part of the configuration - either as Fire Alarm Relay Only or bundled with a 2-relay, independently controlled relay, 4-relay integrated logic, or 8 PTC output board - so the release function lives inside the same enclosure as the 2A supply. The Detex 10-800 Series is a universal logic controller with a 120VAC/24VDC power supply and battery backup, meaning the sequencing logic is the primary product and the power section comes with it. The BEST ELR150 Series is a power supply control module for electronic access control, another case where the control function is the defining part. Choose by whether you need door logic beyond relay release.
17) My spec calls for a UL listed access control power supply. Which of these carry a listing in the model name?
Two peers state a listing in the model description: the Aiphone AC-PS1250 is a UL Listed 12V DC 5A supply for AC Series access control kits, and the Command Access PS210 is a UL 6E/CSA linear supply at 1.5A 24VDC. The Altronix AL1024ULACMCB is a power supply and access power controller with 8 PTC outputs at 24VDC 10A. The PS902 carries a Grade 1 commercial rating and is intended for life-safety and security applications in commercial, institutional, and multi-family environments; for its UL listing details, the Von Duprin PS902 installation instructions and data sheet are the reference the submittal should cite.
18) I need battery backup on a 24 V access control job. Which supplies include it rather than adding it as an option?
On the PS902, battery backup is the BBK option selected at order time and can be combined with any of the distribution board choices, including the 4 Relay Board Integrated Logic with FA. Among the peers, the Adams Rite PS-1 is a 1 amp 12/24 VDC regulated supply with battery backup in the model itself, the Command Access PS204/204B is a linear supply with 2A at 24VDC and battery backup, and the Detex 10-800 Series pairs a 120VAC/24VDC supply with battery backup as part of the logic controller. The PS204/204B matches the PS902 on 2A but at 24VDC only.
19) For standardizing a facility on one power supply model, how does the PS902 compare to a 24 V only unit?
The PS902 is field-selectable between 12 VDC and 24 VDC at the unit during installation, so one part number covers both device voltages across a building and stockroom. A 24 V only unit such as the Command Access PS204/204B at 2A 24VDC or the Command Access PS1 Series 24VDC linear supply with 1 amp output means any 12 V device on the site needs a second model. On the 12 V side, the Aiphone AC-PS1250 is 12V DC 5A. Dual-voltage peers that also cover both are the SDC 632 Series at 2 amp with dual voltage selection and the Securitron AQD1 at 12/24 VDC 1 amp.
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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 Von Duprin PS902 come with a warranty?
Absolutely. The Von Duprin PS902 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 Von Duprin PS902?
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