Altronix MAXFIT7F8APS 8-Door Access Control Power Distribution Kit

Overview

The Altronix MAXFIT7F8APS is a fully integrated 8-door access control power distribution kit housed in a BC750 enclosure. It combines the eFlow104NB power supply/charger, ACM8 access power controller, PDS8 dual-input power distribution module, and VR6 voltage regulator into a single pre-wired assembly — eliminating the time integrators typically spend sourcing and assembling components separately. If you're commissioning a mid-size commercial access system (8 doors or fewer) and need UL-listed, battery-backed power in one enclosure, this kit is built for that use case.

Key Features

• 24VDC / 10A Regulated Output: The eFlow104NB converts 120VAC/60Hz input to a filtered, regulated 24VDC rail at up to 10A continuous — enough headroom to power eight doors of hardware plus auxiliary devices without a separate supply. Overvoltage protection is built in, which matters on noisy commercial panels.
• Eight Independently Controlled Relay Outputs (ACM8): Each of the eight 24VDC outputs is individually switched via Form C relays rated at 28VAC/VDC @ 2.5A. Fail-Safe and Fail-Secure modes are output-selectable, and each can alternatively be configured as unswitched auxiliary power — useful when a reader or REX needs continuous power regardless of door state.
• Dual-Voltage Distribution via PDS8: The PDS8 module accepts both 24VDC (from the eFlow104NB) and 12VDC (from the VR6) and routes either voltage to any of its eight outputs. Each output is individually selectable between the two rails, or can be set to OFF for servicing a single door without killing power to others. Green LEDs indicate 12VDC, red indicate 24VDC — fast visual confirmation during commissioning.
• 12VDC / 6A Onboard Regulation (VR6): The VR6 steps the 24VDC bus down to a regulated 12VDC at 6A continuous with surge suppression. This feeds the PDS8 12V rail, giving you both voltages from a single AC input — no second transformer needed for mixed-voltage hardware.
• Battery Backup — Up to 12AH/12VDC (4 Batteries Internal): The eFlow104NB supports up to four 12VDC sealed lead-acid or gel batteries within the enclosure (batteries sold separately). On AC loss, failover is instantaneous. A low-DC-power shutdown kicks in before deep discharge (at 70–75% of nominal for 24V units), protecting battery service life on extended outages.
• FACP Interface with Selectable Fire Alarm Disconnect: The fire alarm disconnect is individually selectable for any or all eight relay outputs — meaning you can configure Emergency Egress on specific doors only rather than applying a site-wide override. The FACP interface also supports alarm monitoring or auxiliary device triggering.
• UL-Listed for Access Control: The eFlow104NB carries UL294, UL603, UL1481, CSA C22.2 No.205, CAN/ULC-S319-05, and ULC-S318-96 listings. For AHJ sign-off on commercial access control installs, this eliminates the compliance guesswork on the power side.
• Supervised AC and Battery Monitoring: Form C contacts report AC failure and battery fault states back to the panel or monitoring system. An LED array on the eFlow104NB shows live input presence, DC output status, and battery condition — useful during walk-throughs without opening the enclosure.

Integration & Compatibility

The MAXFIT7F8APS accepts open-collector sink or normally open dry-contact triggers from any access control panel, keypad, push button, or REX PIR. It is hardware-agnostic at the trigger input level, making it compatible with virtually all commercial ACS platforms. Supported load types include mag locks, electric strikes, magnetic door holders, and other 12VDC or 24VDC access hardware. For deployments requiring more than 12AH battery capacity, the eFlow104NB supports external batteries up to 40AH or 65AH via a separate enclosure. The enclosure measures 20.5"H x 16.5"W x 6.25"D and weighs 27.3 lbs — plan for wall-mount reinforcement in drywall environments. Operating range is 0°C to 49°C (32°F to 120°F), appropriate for conditioned equipment rooms and most domestic IT closets. See the full Altronix access power catalog for companion products, or browse access control power supplies to compare capacity options. For door hardware pairing guidance, visit our access control category, and for PoE-based deployments running parallel IP reader infrastructure, review our PoE switch selection.

What's in the Box

• 1x BC750 enclosure
• 1x eFlow104NB Power Supply/Charger
• 1x ACM8 Access Power Controller
• 1x PDS8 Dual Input Power Distribution Module
• 1x VR6 Voltage Regulator

Frequently Asked Questions

Q: How many doors can the MAXFIT7F8APS support?

A: The MAXFIT7F8APS supports up to eight doors. The ACM8 module provides eight independently controlled 24VDC relay outputs, and the PDS8 provides eight additional fuse-protected power distribution outputs selectable between 12VDC and 24VDC.

Q: Does the MAXFIT7F8APS include battery backup, and are batteries included?

A: The eFlow104NB power supply supports battery backup using sealed lead-acid or gel-type batteries up to 12AH/12VDC (up to four batteries fit inside the BC750 enclosure). Batteries are sold separately. For larger capacity needs, 40AH or 65AH batteries are supported using a separate enclosure.

Q: What access control panels or triggers are compatible with the MAXFIT7F8APS?

A: The ACM8 accepts open-collector sink or normally open (NO) dry contact trigger inputs from any access control system, keypad, push button, REX PIR, or similar device — making it hardware-agnostic and compatible with virtually all commercial ACS platforms.

Q: Is the MAXFIT7F8APS UL listed?

A: Yes. The eFlow104NB component carries UL294 (Access Control), UL603, UL1481, CSA C22.2 No.205, CAN/ULC-S319-05, and ULC-S318-96 listings, supporting AHJ approval for commercial access control installations in the US and Canada.

Q: Can the fire alarm disconnect be configured per door rather than site-wide?

A: Yes. The FACP fire alarm disconnect is individually selectable for any or all eight relay outputs on the ACM8. You can configure Emergency Egress on specific doors without triggering a site-wide unlock.

Q: What are the enclosure dimensions and mounting requirements for the MAXFIT7F8APS?

A: The BC750 enclosure measures 20.5"H x 16.5"W x 6.25"D and weighs 27.3 lbs (33.6 lbs shipping). Plan for reinforced wall mounting — standard drywall anchors are not adequate at this weight.

Jerry Tildsen

The MAXFIT7F8APS is a kit I reach for when a customer wants a clean, AHJ-approvable 8-door access power solution without the headache of sourcing five separate components and figuring out how they interconnect. The eFlow104NB's 10A/24VDC regulated output is the backbone here — it's enough rail to run a full door load on all eight outputs simultaneously with margin left for auxiliary devices, and the instantaneous battery failover means there's no relay chatter or access event gap during a momentary AC dropout.

Technical Highlights:

• Dual-Voltage Architecture (12VDC + 24VDC): The VR6 steps the 24V bus to 12VDC at 6A continuous, and the PDS8 lets you assign any of the eight distribution outputs to either rail independently — handy when you're mixing 12V strikes with 24V mag locks on the same system.
• Per-Output FACP Selectability: The fire alarm disconnect isn't a site-wide relay — it's individually selectable on each of the ACM8's eight outputs. That distinction matters for AHJs who want stairwell doors on Emergency Egress while locking interior offices during an alarm.
• Battery Supervision with Deep-Discharge Protection: The eFlow104NB shuts down DC output terminals before battery voltage drops below 70–75% of nominal, protecting 12AH battery sets from the kind of deep discharge that kills them after a single long outage.

Deployment Considerations:

• The BC750 enclosure weighs 27.3 lbs assembled — that's a two-person wall mount at minimum. Verify your backboard can handle the load before scheduling the install.
• Batteries are not included and must be sourced separately. If the site's runtime requirement exceeds what four internal 12AH batteries can deliver, budget for a secondary enclosure — the eFlow104NB supports up to 65AH externally but won't fit that capacity inside the BC750.

The MAXFIT7F8APS is the right call for 4–8 door commercial installs — office suites, school wings, light industrial facilities — where a single UL294-listed, battery-backed power assembly needs to pass inspection and stay serviceable for years without a custom wiring job every time.