Locknetics LP250RDB4 2.5A Powe...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$356.00
$228.56
Locknetics Locknetics LP250RDB4 2.5A Power Supply 4 Output Relay with Enclosure LOCKNETICS-LP250RDB4

Locknetics LP250RDB4 2.5A Power Supply 4 Output Relay with Enclosure

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Model: LP250RDB4

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

$356.00
$228.56
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2.5 amp power supply and 4 output relay distribution option board with enclosure.

The LP Series of power supplies include a 1.5 amp and 2.5 amp option to power various electronic access control devices and most single or double door applications. This line of UL294 certified, Class 2 power supplies have field selectable output voltage, a built-in charger for battery backup and the ability for fire alarm integration. Field replacement is simple with an industry common power supply board footprint and power can be easily managed with the addition of the RDB4 option board.

ACCESSORIES

  • RDB4 Option Board is a four output relay distribution board (LP250 only - sold separately)
  • LP150B 1.5 AMP board only
  • LP250B 2.5 AMP board only

RESOURCES and DOWNLOADS

Locknetics LP150/250 Installation Instructions

Locknetics LP Series Data Sheet

Manufacturer Resources

Product Specs

Subcategory:
Controllers, Power Supplies and Transformers
Series:
LP Series
Product Group:
Electronic Access Controls
Product Subgroup:
Controllers, Power Supplies and Transformers
Product Type:
Power Supplies
Commercial/Residential:
Commercial
Current:
2.5A
Product Model:
LP250RDB4
Product Category:
Electronic Access Controls
Department:
Door Hardware

Locknetics LP250RDB4 – Frequently Asked Questions

1) Does the Locknetics LP250RDB4 come with the RDB4 relay board already installed, or do I order that separately?
The LP250RDB4 is the packaged version: a 2.5 amp LP Series power supply, the RDB4 four output relay distribution board, and the enclosure together. The RDB4 is also sold on its own as an option board if you already have an LP250 in the field. Note the RDB4 pairs with the 2.5 amp LP250 only, not the 1.5 amp board.
2) How many doors will a 2.5 amp Locknetics LP250 power supply run?
The LP Series is built around single or double door applications, with the 1.5 amp and 2.5 amp boards covering typical electronic access control loads. The 2.5 amp LP250 is the larger of the two, so it's the one to reach for when you're powering two openings or a strike plus a reader and the current adds up. Total the holding current of everything you're feeding and stay under 2.5A.
3) Is the Locknetics LP250RDB4 UL294 listed for access control?
Yes. The LP Series power supplies are UL294 certified and are Class 2 supplies, which is what a spec writer or AHJ will be looking for on an access control power source in a commercial building. The LP250RDB4 is a commercial-duty product.
4) Will the Locknetics LP250 drop the locks on a fire alarm signal?
Fire alarm integration is built into the LP Series, so the supply can be tied to the building's alarm to release power to locking devices on alarm. Combine that with the RDB4's four relay outputs and you can drop selected openings rather than everything on the board.
5) I need to replace a failed access control power supply board in an existing cabinet. Will the Locknetics LP250 board fit?
The LP Series uses an industry common power supply board footprint, which is exactly why Locknetics calls out field replacement as simple. If your existing enclosure was built around that standard footprint, the LP250B 2.5 amp board only version is the part to order rather than the full LP250RDB4 with enclosure. There's an LP150B 1.5 amp board only as well.
6) The LP250RDB4 is not enough current for my project. What should I use instead?
For more headroom, the Altronix AL1024ULACMCB is a power supply and access power controller with 8 PTC outputs at 24VDC and 10A in a grey enclosure, drawing 115VAC 60Hz at 4.2A on the input side. The Securitron AQS1210 is a switching supply at 12 VDC 10 amp, and the SDC 634 Series is a 4 amp regulated and filtered supply with dual voltage selection. The Altronix is the direct step up from the Locknetics LP250RDB4 concept because it combines the supply with multi-output access power control in one enclosure, the same pairing the LP250 makes with its four output relay distribution board, just at higher current and output count.
7) Can I use the LP250RDB4 to power motorized latch retraction exit devices?
Motorized latch retraction hardware normally calls for a supply built for its inrush profile. The BEST RPSMLR2 Series is a power supply specifically for motorized latch retraction exit devices, and the Command Access PS210 is a UL 6E/CSA linear supply with 1.5A at 24VDC and boost circuitry, which is the feature that covers retraction surge. The Locknetics LP250RDB4 is a 2.5 amp Class 2 supply with a four output relay distribution board aimed at electronic access control devices and most single or double door applications. If the exit device on your opening is MLR, specify against the RPSMLR2 rather than assuming the LP250 covers it.
8) Will the LP250RDB4 work for a delayed egress exit device application?
Delayed egress hardware is usually specified with its own supply. The BEST PS161-6 is a power supply for delayed egress exit devices with 120V input, 12/24V output and 6A capacity - six amps versus the 2.5 amps on the Locknetics LP250RDB4, and sized for the magnet and horn load a delayed egress device holds continuously. The LP250RDB4 with its four output relay distribution board is the better fit where you are distributing switched power to access control devices across single or double doors rather than holding a delayed egress device.
9) How does the Von Duprin PS902 compare to the Locknetics LP250RDB4?
The Von Duprin PS902 is a base power supply rated 2A at 12/24 VDC field selectable for access control, and it carries a Grade 1 designation. The Locknetics LP250RDB4 is 2.5A, also field selectable on output voltage, and ships with the RDB4 four output relay distribution board already in the enclosure. The PS902 name says base, so it is the supply by itself; option boards are what add distribution. The practical decision is whether you need relay distribution out of the box - that is what the RDB4 brings to the LP250.
10) Can I add battery backup to the Locknetics LP250RDB4?
The LP Series board has a built-in charger for battery backup, so you add batteries in the enclosure rather than an external charging module. Handy on delayed egress or mag lock openings where you need the hardware to behave through a power loss.
11) What does the RDB4 relay board actually do that a plain power supply doesn't?
It splits one 2.5 amp supply into four separately switched relay outputs, so each door or device gets its own controlled feed off a single board instead of running four supplies. That's how you manage a small cluster of openings from one enclosure and keep each one independently releasable.
12) What are the alternatives to the Locknetics LP250RDB4 if I need more outputs or more current?
For more distribution points, the RCI DKPS-2A gives 8 outputs at 12/24VDC 2A, and the Altronix AL1024ULACMCB is a power supply and access power controller with 8 PTC outputs at 24VDC 10A in a grey enclosure. If you want a comparable dual-voltage 2A supply without the relay board, the Von Duprin PS902 is 2A 12/24VDC field selectable, and the SDC 632 is a 2 amp regulated dual voltage unit. Stepping up, the SDC 634 is 4 amp and the Securitron AQS1210 is 12VDC at 10 amps.
13) Is the Locknetics LP250 the right supply for motorized latch retraction exit devices?
Motorized latch retraction pulls a heavy inrush and is usually specified with a dedicated MLR supply rather than a general access control supply. The BEST RPSMLR2 is built specifically for motorized latch retraction exit devices, and the BEST PS161-6 is aimed at delayed egress exit devices at 120V in, 12/24V out, 6A. Use the LP250RDB4 for strikes, mag locks, readers and similar access control loads within its 2.5 amp budget.
14) If I only need to power a single electric strike and do not need relay distribution, what is a simpler alternative to the LP250RDB4?
A single-output supply covers that job without the relay board. The Command Access PS1 is a 24VDC linear power supply with 1 amp output, the SDC 620 Series is a 1 amp regulated and filtered low voltage supply with dual voltage selection, and the Securitron AQD1 is a switching supply at 12/24 VDC 1 amp. Any of those powers one strike directly. The Locknetics LP250RDB4 is built for the opposite case - 2.5 amps feeding a four output relay distribution board in an enclosure - so its value only shows up when you are splitting power among several devices or want fire alarm integration and battery backup charging on the LP Series board.
15) I need battery backup on this opening. Which supplies besides the LP250RDB4 offer it?
The Locknetics LP250RDB4 has a built-in charger for battery backup as part of the LP Series board. Among alternatives, the Adams Rite PS-1 is a regulated power supply at 1 amp, 12/24 volts DC with battery backup, the Command Access PS204/204B is a linear supply with 2A at 24VDC and battery backup, and the Detex 10-800 Series is a universal logic controller with 120VAC/24VDC power supply and battery backup. Of those, the PS204/204B is closest on current at 2A against the 2.5A LP250, though it does not carry the four output relay distribution board the LP250RDB4 includes.
16) Is the ROFU 9126T mini power supply a substitute for the LP250RDB4?
No. The ROFU 9126T is a plug-in mini power supply at 12 VDC and 1.5A with time delay - a compact single-device unit for one strike where you want a built-in delay. The Locknetics LP250RDB4 is a 2.5 amp Class 2 supply with a four output relay distribution board mounted in an enclosure, with field selectable output voltage and fire alarm integration. They serve different scopes: one device on a plug-in transformer versus a distributed, hardwired access control power source for single or double door applications.
17) Is the Locknetics LP250RDB4 suitable for a residential gate or door?
It's classed as a commercial product and is a UL294 access control supply, so it's aimed at commercial openings, not residential. For a small single-device job, a plug-in unit like the ROFU 9126T at 12VDC 1.5A with time delay, or a 1 amp supply such as the SDC 620 or Securitron AQD1 at 12/24VDC, is the lighter-duty direction.
18) Is the BEST ELR150 control module an alternative to the LP250RDB4?
They fill adjacent roles rather than the same one. The BEST ELR150 Series is a power supply control module for electronic access control, a module that manages power rather than a full boxed supply. The Locknetics LP250RDB4 is a complete 2.5 amp Class 2 supply with the RDB4 four output relay distribution board and enclosure, and its board uses an industry common power supply board footprint so field replacement is straightforward. If you are replacing a control module inside an existing enclosure, the ELR150 is the shape of that job; if you are setting a new supply on the wall, the LP250RDB4 is.
How fast can I get the Locknetics LP250RDB4 delivered?
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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 Locknetics LP250RDB4 come with a warranty?
Absolutely. The Locknetics LP250RDB4 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 Locknetics LP250RDB4?
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
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