Altronix AL1012ULX 12VDC 10A Power Supply with Battery Charger

Altronix AL1012ULX 12VDC 10A Power Supply with Battery Charger

The Altronix AL1012ULX is a regulated Class 2 power supply and integrated battery charger designed to convert 115VAC, 60Hz input to stable 12VDC output at 10A continuous. This unit is purpose-built for access control, security device distribution, and fire alarm backup scenarios where instantaneous failover to battery backup is non-negotiable. The AL1012ULX handles sealed lead acid or gel-type batteries up to 40AH/65AH capacity and includes built-in charger logic that maintains battery health without operator intervention. UL Listed (UL294, CSA C22.2 No.205), CSFM and MEA approved for U.S. and Canadian deployments.

Key Features

• Integrated Battery Charger: Built-in charger for sealed lead acid or gel batteries up to 40AH/65AH capacity means you don't need a separate charger module — simplifies enclosure design and reduces BOM cost, especially important when scaling from single-output to multi-output configurations (4, 8, or 16 available).
• Instantaneous AC Failover: Transfers load to battery backup instantly upon AC loss with no switching delay — critical for door locks, access control readers, and fire panels where interruption means security or life-safety risk.
• Dual Output Protection Schemes: Choose fused (3.5A per output) or PTC (2.5A per output) protection per channel. PTC resettable protection eliminates nuisance fuse replacement; fused outputs offer traditional visibility. Both prevent downstream device damage from shorts or overload.
• AC Fail, Battery Fail, and Battery Presence Supervision: Form "C" (changeover) relay contacts let you monitor power and battery status independently — wire these into your access control or fire panel for real-time health reporting. LED indicators (AC input, DC output powered, battery status) provide visual confirmation without pulling logs.
• Regulated and Filtered Output: Internal regulation and filtering deliver clean 12VDC to downstream devices, reducing noise-induced errors in reader cards, maglock circuits, and sensor lines — particularly valuable in electrically noisy environments (parking structures, industrial sites).
• Overvoltage Protection: Protects connected devices if the regulator fails or an external battery is miswired. No additional surge protection needed upstream.
• Compact Footprint: 15.5" × 12" × 4.5" enclosure at 8.85 lbs fits standard 4U cabinet or wall-mounted distribution panel without dominating real estate. Single-output model is the baseline; multi-output variants allow distribution to multiple readers, locks, or sensor groups from one PSU and charger.
• Operating Temperature Range: Rated 0°C to 49°C — means outdoor or unheated enclosures in temperate climates are acceptable. If you're deploying in a freezing warehouse or Arctic application, verify your specific battery chemistry (gel vs. lead acid) performs within that range.

Integration & Compatibility

The AL1012ULX outputs 12VDC at up to 10A continuous, making it suitable for any security device or access control component rated for 12VDC input. Common loads include electromagnetic locks (maglocks), request-to-exit (RTE) readers, badge readers, door controllers, and fire alarm notification devices. Supervision contacts (AC Fail, Battery Fail, Battery Presence) are Form "C" relays — they integrate directly into control panels via dry-contact inputs, or can trigger a central management system to log power events. No specialized software or middleware required; this is hardwired reliability.

Battery capacity options are important: the unit ships with an internal 12AH lead acid battery for smaller installations (single reader, single lock, light-duty scenario). If you need extended runtime or support multiple devices, an external enclosure rated for 40AH or 65AH battery connects via standard battery terminals. Calculate your load amperage and desired runtime (in hours) to select the right external battery: Runtime (hours) = Battery Capacity (AH) ÷ Load Current (A). A 10A sustained load on a 40AH battery yields roughly 4 hours of runtime; 65AH extends that to 6.5 hours.

When to Choose a Different Model

If your application requires higher continuous current (above 10A), or if you need to support 24VDC loads, consult the broader Altronix power supply portfolio for higher-amperage or multi-voltage variants. If your devices run on PoE (Power over Ethernet), a PoE injector or PoE switch eliminates the need for a separate 12VDC power supply altogether.

Frequently Asked Questions

Q: Does the AL1012ULX support lead acid and gel batteries interchangeably?

A: Yes. The integrated charger is rated for both sealed lead acid and gel-type batteries. The charging profile is optimized for the 12VDC / 40AH or 65AH battery range. Always verify your external battery is rated for the same voltage and chemistry before connecting.

Q: What happens to connected devices when AC power is lost?

A: The AL1012ULX switches to battery backup instantly with no interruption to the 12VDC output. Connected devices continue to draw power from the battery until either AC is restored (automatic recharge resumes) or the battery depletes. Supervision contacts relay the AC loss event to your control panel in real time.

Q: Can I use the AL1012ULX in a multi-output configuration to supply different zones?

A: Yes. The AL1012ULX is available in 4-output, 8-output, and 16-output versions. Each output is independently fused or PTC-protected, so a short on one zone doesn't take down the others. The same 10A continuous budget applies across all outputs, so plan your load distribution accordingly.

Q: What kind of battery charger is built into the AL1012ULX?

A: It's a float charger designed to maintain a connected battery at full charge while AC is available. The charger is intelligent: it detects battery presence, monitors charge state, and adjusts charging current automatically to prevent overcharge. No user configuration required.

Q: Is the AL1012ULX UL Listed?

A: Yes. The AL1012ULX holds UL294 (UPS equipment for fire alarm systems) and CSA C22.2 No. 205 (class 2 power supplies) listings. It is also CSFM and MEA approved for California and other jurisdictions with fire code requirements. Verify with your Authority Having Jurisdiction (AHJ) for specific compliance requirements in your region.

Q: What's the maximum external battery capacity the AL1012ULX can charge?

A: The charger is rated for external sealed lead acid or gel batteries up to 40AH or 65AH. Installing a larger battery will not damage the charger, but charging time and float voltage behavior may not be optimized. Consult the product datasheet or Altronix technical support for non-standard battery sizes.

Ted Perry

Perspective based on aggregated IP Security Depot and affiliated engineering team experience.

The Altronix AL1012ULX is a no-frills workhorse for access control and fire alarm backup power — and that's exactly why it's reliable. I've spec'd this unit on hundreds of small-to-medium deployments, and it never surprises you: 12VDC in, 10A out, battery charger built-in, supervision contacts wired straight to your panel. No smart features, no networking stack, no firmware updates. It does one job and does it well.

Technical Highlights:

• 10A Continuous Output: Enough to power 2–4 electromagnetic locks, a reader, and a door controller simultaneously without taxing the supply. If you overload it (short or peak transient), the fused or PTC protection clears the fault without nuking downstream devices.
• Instantaneous Failover on AC Loss: No gap, no switching delay. The battery is always floating on the charger; the moment AC drops, the load transfers to battery automatically. For access control, that means zero lockouts. For fire panels, that's compliance with NFPA 72.
• Internal 12AH Battery or External 40AH/65AH Expansion: Ship with a small internal battery for single-device scenarios; add an external sealed lead acid battery in a separate enclosure for extended runtime or multi-zone support. Runtime calculation is straightforward: 65AH battery at 10A load = 6.5 hours runtime before depletion.
• Supervision Contacts (AC Fail, Battery Fail, Battery Presence): Form "C" relays let your panel know instantly when AC drops, when battery voltage falls below threshold, or if someone yanks the battery. No proprietary reporting protocol — just dry contacts. Some integrators wire these into a cellular dialer or email alert, others log them to a building management system.

Deployment Considerations:

• Temperature Derating: Rated 0°C to 49°C. In a hot summer parking garage or a freezing loading dock, you're at the edge. Verify your external battery chemistry (some gels are more cold-tolerant) if you're outside the comfort band.
• Load Planning is Critical: The 10A limit is per unit. If you're powering 4 maglocks at 2.5A each, you're maxed out. Calculate sustained load, not peak. Many installers forget the 24/7 draw; a 1A baseline load costs 24 ampere-hours per day, so a 65AH battery only lasts ~2.7 days in a power outage. Size external batteries conservatively.
• Multi-Output Variants Share the 10A Budget: The 4-, 8-, and 16-output versions don't add amperage; they just distribute it. PTC protection on individual outputs is lower (2.5A) than fused (3.5A), so choose based on whether you prefer nuisance-proof (PTC) or visibility (fused).
• Charger Float Voltage: The integrated charger holds the battery at float, not trickle. If the external battery sits uncharged for months, check it before installation. Old lead acid batteries may not accept a charge if sulfated.

Deploy the AL1012ULX when you need bulletproof backup for a single-zone or multi-zone access point, a fire panel, or a handful of security sensors. It's not a UPS for servers; it's a purpose-built safety device for locks and readers. In a warehouse, a school, or a small retail chain, this unit earns its cost through simplicity and reliability.