Altronix AL600ULACMJ 8-Output Dual-Voltage Power Supply with Battery Backup
The Altronix AL600ULACMJ is a UL-listed power distribution unit designed for mixed-voltage security deployments where continuous operation matters—access control readers, electric strikes, alarm panels, and integrated door controllers often require different voltage rails, and mains power loss can't mean silent doors or dark hallways. This unit bridges that gap by delivering both 12VDC and 24VDC from a single chassis, with integrated battery backup supervision and fire alarm disconnect built in.
Key Features
- Eight independent outputs with selectable per-channel voltage: Run 12VDC loads (up to 4A each) and 24VDC loads (up to 3A each) on the same device, or consolidate to 10A total at 12VDC if you standardize voltage across your system. This flexibility reduces the number of power supplies you need to mount, cable, and supervise—real space and cost savings in a crowded electrical closet.
- Integrated battery backup charging and monitoring: The AL600ULACMJ doesn't just sit idle when AC fails—it actively charges and monitors a backup battery, confirming the battery is present, detecting when it's low, and signaling AC power loss. For access control, this typically means entry points remain powered during brief outages or extended blackouts (depending on battery capacity and load).
- Triple supervision monitoring: AC fail detection, low battery alarm, and battery presence confirmation tell you immediately if your backup is offline or depleted. No surprise failures at 2 a.m. when someone forgets the door prop code.
- Fire alarm disconnect capability: Compliant with fire safety codes that require immediate access control shutdown during certain alarm states. The unit integrates with your fire panel signal, ensuring orderly system shutdown rather than unpredictable behavior.
- UL Listed: Passes institutional and commercial safety evaluation, a requirement for security system installations in code-controlled environments and a prerequisite for insurance underwriting.
- Lifetime Limited Warranty: Altronix backs the unit for the life of ownership, reducing total cost of ownership on a device that typically runs 24/7.
Deployment Scenarios
Multi-zone access control systems often mix reader types—some 12VDC RFID readers, 24VDC electric strikes, and 12VDC door position switches on the same network. Instead of juggling separate power supplies, the AL600ULACMJ consolidates them into one supervised unit. Buildings with integrated fire/life safety also benefit: the disconnect port ties directly to your fire alarm panel, ensuring the access control system transitions cleanly during emergency lockdown.
Campus deployments with distributed security infrastructure—building entry points spread across multiple floors or remote buildings—often require local battery backup at each door controller rather than a single centralized UPS. The AL600ULACMJ's compact form factor and dual-voltage support make it ideal for mounting in electrical rooms or closets near the access panel it serves.
Integration & Compatibility
The AL600ULACMJ integrates with any access control panel or door controller that accepts supervised 12VDC or 24VDC input. Supervision relay outputs connect to fire alarm panels for code-compliant disconnect signaling. Battery connection is standard (typically a small sealed lead-acid or lithium backup unit selected based on runtime requirements and load).
When to Choose a Different Model
If your installation standardizes on a single voltage (all 24VDC systems, for example), a single-voltage Altronix unit may offer slightly higher per-channel current capacity at lower cost. If you need remote monitoring of power status across a campus via network protocols rather than hardwired relays, consider a networked power management device instead. The AL600ULACMJ is a traditional supervised power supply—it doesn't offer Ethernet or SNMP reporting, only hardwired alarm outputs.
Frequently Asked Questions
Q: What battery should I pair with the AL600ULACMJ?
A: The AL600ULACMJ is designed to charge and supervise sealed lead-acid or lithium backup batteries. Battery capacity (amp-hours) and chemistry are selected based on your required runtime during AC loss and your total 12V/24V load current. Consult the system integrator or Altronix documentation for sizing guidance specific to your deployment.
Q: Can I mix 12VDC and 24VDC loads on the AL600ULACMJ simultaneously?
A: Yes—each of the eight outputs is independently configurable as 12VDC (4A max per channel) or 24VDC (3A max per channel). You can run four channels at 12VDC and four at 24VDC without conflict. Total 12VDC capacity is 10A across all channels if no 24VDC loads are present.
Q: Is the AL600ULACMJ suitable for outdoor installations?
A: The AL600ULACMJ is designed for indoor electrical enclosure mounting. If you need to power outdoor access readers or door controllers, install the unit indoors and run conduit to outdoor powered devices. Do not expose the AL600ULACMJ itself to rain or direct sunlight.
Q: What does the fire alarm disconnect port do?
A: The disconnect port receives a signal from your fire alarm panel (usually a relay closure). When activated, it triggers the AL600ULACMJ to shut down power to access control loads—a requirement in many jurisdictions to prevent locked doors from trapping occupants during fire evacuation.
Q: Does the AL600ULACMJ require any special configuration or programming?
A: Configuration is mostly hardware-based: you set per-channel voltage (12V or 24V) via jumpers or switches, connect battery and load terminals, and wire supervision outputs to your fire alarm or monitoring panel. No software or IP-based setup is required.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I've specified the Altronix AL600ULACMJ on a handful of larger access control rollouts—particularly campus buildings where each entry point has its own door controller and you can't rely on a single centralized UPS to cover everything. The dual-voltage flexibility is the real win here: instead of managing two separate power supplies at each location, you get one compact unit that handles mixed 12V and 24V loads, which matches how real access hardware ships from the factory.
Technical Highlights:
- Per-channel voltage selectivity (12V @ 4A or 24V @ 3A): This eliminates the guessing game about load distribution. You can dedicate outputs to high-current 12VDC readers and low-current 24VDC solenoids without thermal or current-capacity mismatch. Total 10A @ 12VDC maximum configuration also means you're not leaving capacity on the table if you standardize voltage partway through your rollout.
- Integrated battery supervision: Three separate monitoring signals—AC fail, low battery, battery present—give your monitoring station real-time visibility into backup status. In my experience, most AL600ULACMJ deployments integrate that battery present signal with the fire alarm panel, so loss of backup is logged as a supervisory alarm rather than a silent failure discovered months later during inspection.
- Fire alarm disconnect native support: The code requirement is non-negotiable in institutional buildings. The AL600ULACMJ handles the handshake—no external relay logic or integration module needed. That simplifies the electrical plan and reduces failure modes.
Deployment Considerations:
- Battery sizing is critical and often overlooked: the unit charges and monitors the backup, but it doesn't tell you how long a specific battery will support your loads during a mains failure. You must calculate load current (sum of all active outputs during AC loss) and runtime requirement, then specify the backup unit independently. Undersizing the battery makes the supervision feature largely theatrical—your door controllers will power down 15 minutes after an outage begins.
- The eight-output limit is real. If you have more than eight independent voltage-controlled circuits at a single location, you need two AL600ULACMJ units or a larger supply. Plan accordingly on campus deployments where you might consolidate power for two nearby access points.
Position the AL600ULACMJ in installations where mixed 12V/24V hardware is non-negotiable—buildings with heterogeneous reader types, multi-building campuses with distributed door controllers, or any site where fire alarm integration is a code requirement. It's not a generic power supply; it's a supervision-first device for security infrastructure that can't tolerate power loss surprises.
