BEST RPSMLR2 Series Power Supp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$831.00
$588.16
PRECISION Precision Hardware Inc (PHI) RPSMLR2 Series - Power Supply for PRECISION Motorized Latch Retraction PHI-RPSMLR2

BEST RPSMLR2 Series Power Supply for Motorized Latch Retraction Exit Devices

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Model: RPSMLR2BB

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

$831.00
$588.16
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BEST RPSMLR2 Series Power Supply for Motorized Latch Retraction Exit Devices

Professional Power Supply Solution for Motorized Latch Retraction Systems

The BEST RPSMLR2 Series provides code-compliant filtered and regulated 24 Volt DC power specifically designed for PRECISION Motorized Latch Retraction (MLR) exit devices. This professional power supply features dual 24VDC outputs at 2 Amps with 200mA holding current, plus an auxiliary 24VDC output at 0.8 Amps. Available in two enclosure sizes (12.5"x7.5"x3.25" and 13.5"x13"x3.25"), each unit can power up to two MLR exit devices with UL 294 and ULC S-319 certifications.

Professional Features & Benefits

  • Dual Device Capacity: Powers up to two MLR exit devices from a single power supply unit for efficient system design.
  • Code-Compliant Power Output: Provides filtered and regulated 24 Volt DC power with 2 Amps capacity and 200mA holding current for reliable operation.
  • Flexible Output Configuration: Two operational modes including 1-second delay prior to relay output and positive confirmation of latch retraction when used with MLR exit device sensor wires.
  • Fire Alarm Integration: Built-in fire alarm termination with dedicated green LED indicator for emergency system compatibility.
  • Battery Backup Option: RPSMLR2BB model includes built-in charger for sealed lead acid or gel batteries with automatic AC failure switchover and 650mA max charging current.
  • Visual Status Monitoring: Comprehensive LED indicators for AC power (green), triggered input (2 red), fire alarm interface (green), and battery status (red).
  • Security Features: Keyed enclosure provides tamper protection for critical access control components.
  • Professional Certifications: UL 294 and ULC S-319 listed for code compliance and reliable performance in commercial applications.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: Yes
  • Product Category: Electronic Access Controls
  • Product Group: Electronic Access Controls
  • Product Subgroup: Power Supplies
  • Product Type: Power Supplies
  • Series: RPSMLR2
  • Subcategory: Power Supplies

Installation & Operation

  1. Verify electrical requirements match available power supply. Confirm 120 VAC input power and current capacity before proceeding.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Mount the unit in the specified location ensuring adequate clearance for wiring access, ventilation, and future service requirements.
  4. Route and connect wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the application.
  5. Configure operational settings including relay output timing and sensor wire integration per application requirements.
  6. Restore power and test all functions including normal operation, fire alarm interface, and battery backup operation if equipped.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.

Professional Applications

  • Commercial Building Security Systems
  • Educational Institution Safety Systems
  • Healthcare Facility Access Control
  • Industrial Facility Monitoring
  • Emergency Exit Compliance
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose BEST Quality?

BEST RPSMLR2 Series power supplies deliver professional-grade reliability with UL 294 and ULC S-319 certifications for demanding commercial applications. The filtered and regulated 24VDC output with comprehensive monitoring capabilities ensures dependable performance for critical motorized latch retraction systems. Engineered for demanding commercial applications where code-compliant power distribution and system reliability are essential.

Manufacturer Resources

Precision 2000 Series Catalog

Product Specs

Series:
RPSMLR2
Subcategory:
Power Supplies
Product Group:
Electronic Access Controls
Product Subgroup:
Power Supplies
Commercial/Residential:
Commercial
Electronic:
Yes
Product Type:
Power Supplies
Product Category:
Electronic Access Controls
Department:
Door Hardware

BEST RPSMLR2BB – Frequently Asked Questions

1) What power supply do I need for PRECISION motorized latch retraction exit devices?
The BEST RPSMLR2 Series is built specifically for PRECISION MLR (motorized latch retraction) exit devices. It supplies filtered and regulated 24VDC, with dual outputs at 2 amps and a 200mA holding current, so it covers both the inrush of the motor pulling the latch and the current it draws while held retracted. There is also an auxiliary 24VDC output at 0.8 amps for other devices on the opening. A generic 24V supply that does not handle MLR inrush is the usual reason a retrofit motor stalls.
2) How many MLR exit devices can one RPSMLR2 power supply run?
Two. Each RPSMLR2 unit powers up to two motorized latch retraction exit devices, so a single supply covers a typical pair of doors. A third opening needs a second supply.
3) What is the difference between the RPSMLR2 and the RPSMLR2BB?
Battery backup. The plain RPSMLR2 has no battery storage; the RPSMLR2BB adds a built-in charger for sealed lead acid or gel batteries, automatic switchover on AC failure, and 650mA maximum charging current, plus the enclosure space to hold the batteries. If the openings have to keep retracting latches through a power outage, order the BB. If the doors are allowed to revert to mechanical operation when power drops, the standard unit is enough.
4) Does the RPSMLR2 power supply tie into the fire alarm?
It has a built-in fire alarm termination with a dedicated green LED to show the interface state. That lets the fire alarm system drop power to the MLR devices so the latches project and the doors relatch on alarm, which is what most AHJs want on a fire rated opening. Wire it per the manufacturer wiring diagram and test the alarm interface at commissioning.
5) Is the BEST RPSMLR2 power supply UL listed for access control?
UL 294 and ULC S-319 listed. Those are the access control system unit standards, so it satisfies the listed-power-supply line item on a commercial access control spec in both US and Canadian jurisdictions.
6) How do I get a signal back confirming the exit device latch actually retracted?
The RPSMLR2 has two operational output modes: a one second delay prior to relay output, or positive confirmation of latch retraction taken from the MLR exit device sensor wires. The second mode is the one to use when an automatic operator or card reader sequence must not swing the door until the latch is clear. It requires running the sensor wires from the exit device back to the supply, so plan that conductor count into the door cord or transfer hinge.
7) Can I use a standard 24VDC 2 amp access control power supply instead of the RPSMLR2 for a motorized latch retraction device?
Not interchangeably. Supplies like the SDC 632 Series 2 amp regulated and filtered low voltage unit or the Von Duprin PS902 base power supply (2A, 12/24VDC field selectable) are general access control power, sized for strikes, mags and controllers. The RPSMLR2 is built around MLR: dual 24VDC outputs at 2 amps with a 200mA holding current, the latch retraction confirmation input off the device sensor wires, and the delay-before-relay mode. If your job is a motorized latch retraction exit device, buy the MLR supply; if you are powering electric strikes or maglocks, the general purpose units are the right call.
8) I need to power more than two MLR exit devices from one location. What should I look at?
Each RPSMLR2 unit powers up to two MLR exit devices, so a bank of three or more openings fed from one point exceeds a single unit. Higher-capacity options in the same class include the Altronix AL1024ULACMCB, a power supply and access power controller with 115VAC 60Hz input at 4.2A and 24VDC at 10A across 8 PTC outputs, and the SDC 634 Series, a 4 Amp regulated and filtered low voltage supply with dual voltage selection. Confirm the exit device manufacturer's requirements before feeding motorized latch retraction from a general-purpose controller.
9) What can I use instead of the BEST RPSMLR2 to power a motorized latch retraction exit device?
The RPSMLR2 is built specifically for PRECISION motorized latch retraction exit devices, supplying filtered and regulated 24VDC at 2 Amps with a 200mA holding current and powering up to two MLR devices per unit. If you are specifying a different brand of supply for an MLR opening, the Command Access PS204/204B is a linear power supply rated 2A at 24VDC with battery backup, and the Von Duprin PS902 is a base power supply rated 2A at 12/24 VDC field selectable for access control. The inrush behavior of motor-driven latch retraction is what drives the sizing, so confirm the device manufacturer's current draw against whichever supply you choose.
10) Is the Von Duprin PS902 a drop-in equivalent for the BEST RPSMLR2?
They are both 2 Amp access control supplies but they are not configured the same way. The PS902 is a base power supply rated 2A at 12/24 VDC field selectable, meaning the voltage is set in the field and option boards are used to add functions. The RPSMLR2 is dedicated to motorized latch retraction: fixed 24VDC output with 200mA holding current, two operational modes including a 1-second delay prior to relay output and positive confirmation of latch retraction when wired to the MLR device sensor wires, plus built-in fire alarm termination. If the MLR sensor-wire confirmation is part of your sequence of operation, that function has to be accounted for on whichever platform you pick.
11) If I need battery backup on the exit device power supply, what are my options besides the RPSMLR2BB?
The RPSMLR2BB adds a built-in charger for sealed lead acid or gel batteries with automatic AC failure switchover and 650mA maximum charging current, in the larger 13.5 x 13 x 3.25 inch enclosure so the batteries have somewhere to live. Comparable supplies that include backup are the Command Access PS204/204B at 2A 24VDC with battery backup, the Adams Rite PS-1 regulated supply at 1 Amp 12/24 volts DC with battery backup, and the Detex 10-800 Series universal logic controller with 120VAC/24VDC power supply and battery backup. Match the backup capacity to the standby draw of what is on the door.
12) My access control devices run on 12VDC. Can I use the RPSMLR2, or do I need a different supply?
The RPSMLR2 is a 24 Volt DC supply throughout, with dual 24VDC main outputs and a 24VDC auxiliary output, so a 12VDC device needs a different source. Dual-voltage and 12V options include the SDC 631 Series, a 1.5 Amp regulated and filtered DC power controller with dual voltage selection, the RCI DKPS-2A at 12/24VDC 2A with 8 outputs for access control systems, the Aiphone AC-PS1250 at 12V DC 5A UL Listed, and the Securitron AQS1210 switching supply at 12 VDC 10 Amp.
13) What size enclosure does the RPSMLR2 power supply come in, and how much wall space do I need?
Two enclosure sizes are offered: 12.5 x 7.5 x 3.25 inches and 13.5 x 13 x 3.25 inches. The larger box is what carries the battery storage space on the RPSMLR2BB. Both are keyed enclosures for tamper protection, and both need clearance around them for wiring access and ventilation.
14) What input power does the RPSMLR2 need at the wall?
120 VAC input. Confirm the branch circuit and its current capacity before mounting, and kill power before you open the enclosure and land conductors. This is line-voltage work and falls under normal electrical code.
15) What are my options for a 24VDC power supply with battery backup for door hardware?
For MLR exit devices, the RPSMLR2BB is the direct answer, with its own charger and automatic AC failure switchover. Elsewhere in the same class, the Command Access PS204/204B is a linear supply at 2A, 24VDC with battery backup, the Adams Rite PS-1 is a 1 amp 12/24VDC regulated supply with battery backup, and the Detex 10-800 Series pairs a 120VAC/24VDC supply and battery backup with a universal logic controller if you also need sequencing logic. The lower-amperage units will not carry a motorized latch retraction device.
16) How do I troubleshoot an RPSMLR2 that is not driving the exit device?
Read the LEDs before pulling wires. The unit has a green AC power LED, two red triggered-input LEDs, a green fire alarm interface LED, and a red battery LED on the backup model. Green AC with no red trigger means the signal from the reader or button is not landing at the supply. A fire alarm interface showing active will hold the latches projected regardless of the trigger, which is the most common false fault call on these.
17) I only need to power one small electric strike, not an exit device. Is there a smaller power supply than the RPSMLR2?
The RPSMLR2 is sized for motorized latch retraction, with dual 24VDC outputs at 2 Amps plus an auxiliary 24VDC output at 0.8 Amps, and it is more supply than a single low-draw device needs. For lighter loads, the SDC 620 Series is a 1 Amp regulated and filtered low voltage supply with dual voltage selection, the Command Access PS1 Series is a 24VDC linear supply with 1 Amp output, and the Securitron AQD1 is a switching supply rated 12/24 VDC at 1 Amp. Size to the device's rated draw rather than to the enclosure.
18) What is the difference between the RPSMLR2 and a power transfer hinge like the ROFU 10305-LA?
They do different jobs on the same opening and one does not replace the other. The RPSMLR2 is the power source, converting 120 VAC input into filtered and regulated 24VDC for the exit device. The ROFU 10305-LA/10306-LA is a tamper resistant power transfer hinge rated 1.5A at 42V in a plastic white finish, which carries that power across the gap from frame to door leaf. A motorized latch retraction opening generally needs both, and the transfer device has to be rated for the current the exit device draws.
19) Is the Command Access CAT Field Tester a substitute for a permanently installed exit device power supply?
No. The CAT Field Tester is a portable 12-24VDC power supply that runs off DeWalt, Makita and Milwaukee batteries, intended to power a device at the bench or on the door long enough to verify it works. The RPSMLR2 is the permanent installed source: 120 VAC input, filtered and regulated 24VDC output, keyed enclosure for tamper protection, fire alarm termination, and UL 294 and ULC S-319 listings. Use the tester to prove out an MLR device, and the RPSMLR2 to run it.
20) Can I use a plug-in power supply like the ROFU 9126T for a motorized latch retraction device?
The ROFU 9126T is a plug-in mini power supply rated 12 VDC at 1.5A with time delay, and the ROFU 9102-12D UL/9102-24D operates on 10/120VAC 60Hz input. Neither matches what an MLR exit device is set up for on the RPSMLR2, which delivers 24VDC at 2 Amps from a keyed enclosure with fire alarm termination and sensor-wire confirmation of latch retraction. Plug-in supplies suit small standalone loads; a motorized latch retraction opening on a fire alarm interface is a hardwired, enclosure-mounted job.
21) Is the RPSMLR2 rated for commercial installations like schools and hospitals?
It is a commercial-grade unit, and the UL 294 and ULC S-319 listings are what specifications for schools, healthcare facilities and government buildings normally call for on an access control power supply. The keyed enclosure also addresses tamper requirements in public corridors.
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Can I return it if it doesn’t work for me?
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Does the BEST RPSMLR2BB come with a warranty?
Absolutely. The BEST RPSMLR2BB is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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