Altronix SMP10PM12P8 8-Output 12VDC Power Supply
The Altronix SMP10PM12P8 is an 8-output regulated power supply and charger designed to distribute 12VDC power across multiple independent circuits in access control, surveillance, and building automation installations. It accepts 115VAC input and delivers a maximum of 10A total current, split across eight fused channels. Each output circuit is independently protected and supervised, so a short or overload on one line won't cascade to others — a critical design choice for multi-zone deployments where a single failure can't bring down the entire system.
Key Features
- Eight Fused Outputs: Each output has its own fuse, isolating faults to a single circuit. If one zone loses power, the other seven remain active and supervised. This matters in real installations — a cut wire to a door strike or motion sensor won't kill the whole panel.
- 12VDC Regulated Output at 10A Maximum: Regulated voltage holds steady even as load varies, preventing brownout conditions that can cause intermittent lock or sensor failures. The 10A total capacity scales across eight outputs; plan for roughly 1.25A per circuit at full load, though actual draws depend on your connected devices.
- Battery Backup Charging: Integrated charger supports battery backup — critical for access control or emergency lighting systems. During mains power loss, a connected 12VDC battery takes over, keeping locks energized and alarm systems online for the duration the battery supports.
- System Supervision: Built-in monitoring tracks output status — detects low voltage, missing AC input, or fuse failure. This feeds into your security panel or network management layer, replacing manual breaker checks with active alerts.
- BC300 Form Factor Enclosure: Standard industrial DIN-rail or surface-mount housing designed to fit alongside other Altronix power and control modules. Compact footprint for retrofit or new build installations where cabinet space is tight.
- 115VAC Input Configuration: Accepts standard single-phase AC (no three-phase requirement). Simple connection to building mains or UPS output. No special wiring or step-down transformer needed for standard North American installations.
- Lifetime Limited Warranty: Altronix backs the unit for the device's operational life, covering manufacturer defects — standard for Altronix components in the power distribution line.
Typical Deployments
The SMP10PM12P8 is commonly deployed in multi-zone access control power distribution scenarios: four or five electronic door strikes, magnetic locks, or card readers on independent outputs, each with its own monitoring and protection. In surveillance installations, it powers distributed solenoid locks, relay modules, and auxiliary sensors across a facility. Building automation integrators use it to supply independent control circuits — one output per floor or zone — so a single short doesn't propagate across the entire security network.
Integration & Compatibility
The SMP10PM12P8 integrates with any access control panel, NVR, or building automation controller that monitors 12VDC auxiliary power. Supervision outputs interface with standard panel inputs, alerting you to fuse failure or AC loss. It pairs well with uninterruptible power supplies (UPS) or backup batteries for extended runtime during extended outages — connect the SMP10PM12P8 input to your UPS output and a 12VDC sealed battery to the charger terminal for dual-level redundancy.
Capacity Planning
The 10A total budget requires accounting for inrush current on solenoid locks and relay coils. Strikes and mag locks typically draw 0.6–1.2A holding current but can draw 2–4A for 300–500 ms at energization. If you're stacking multiple high-inrush devices on the same output or pushing close to full load, verify your peak draw against the supply's capacity. Eight independent fuses mean you can dial in protection per circuit — smaller fuses for sensor lines, heavier gauge for high-draw locks.
What's in the Box
Consult the manufacturer documentation or your distributor for exact contents. The SMP10PM12P8 enclosure arrives assembled and ready to mount; confirm whether terminal blocks, AC input connectors, or backup battery terminals are factory-installed or shipped loose.
When to Choose a Different Model
If you need distributed power across more than eight zones, look to Altronix's larger power supply lineup — models with 16 or more outputs exist for enterprise-scale multi-building campuses. If your peak load approaches or exceeds 10A sustained, consider a higher-amperage variant. If you require 24VDC instead of 12VDC, Altronix manufactures parallel models at that voltage. If battery backup isn't mandatory, simpler eight-output supplies without charging capability may reduce cost and footprint.
Frequently Asked Questions
Q: Does the SMP10PM12P8 support battery backup for all eight outputs simultaneously?
A: The built-in charger maintains a connected 12VDC battery, which then supplies all outputs during AC mains loss. Total runtime depends on battery capacity and total load draw. High-draw devices (multiple strikes simultaneously) will deplete the battery faster than low-current sensor loads.
Q: Can I use the SMP10PM12P8 for continuous 10A draw, or is that a peak rating?
A: The 10A is the maximum total continuous current across all eight outputs combined. Sustained draws at or near 10A generate heat; verify the enclosure has adequate ventilation or thermal management, especially in warm ambient conditions.
Q: What fuse ratings does the SMP10PM12P8 support?
A: Consult the manufacturer datasheet for recommended fuse sizes per output. Typical configurations use 2–4A fuses for sensor lines and 5–8A for lock circuits, but the exact values depend on your connected device specifications.
Q: Is the SMP10PM12P8 UPS-compatible, or does it need line-powered AC input?
A: The SMP10PM12P8 accepts 115VAC input, which can be supplied by a building UPS output. This allows the supply to stay online during mains failure and charge a connected 12VDC battery for extended backup runtime.
Q: How is supervision output wired to my security panel?
A: Supervision terminals output a signal (typically low-voltage contact closure or logic level) when AC is present and fuses are healthy. Connect this to an auxiliary input on your panel or controller to trigger alerts on loss of AC or fuse fault. Refer to the datasheet for supervision signal type and voltage.
Q: What is the warranty coverage on the SMP10PM12P8?
A: Altronix provides a Lifetime Limited Warranty covering manufacturer defects. This typically excludes damage from misuse, overvoltage, or battery failure; review the full warranty terms with your supplier.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Altronix SMP10PM12P8 is a no-nonsense power distribution workhorse that solves a specific problem: how to safely feed 12VDC power to multiple access control or surveillance devices without a single fault taking down the entire zone. The eight independent fused outputs with integrated supervision are the differentiator here — it's not just power delivery, it's fault isolation with visibility.
Technical Highlights:
- Independent Fused Outputs: Eight separate fuses mean a short on door strike output 3 doesn't affect outputs 1, 2, 4–8. Supervision sees the fault and alerts your panel. In a 10-door facility, losing one zone is manageable; losing all of them is a disaster.
- 10A Total Budget Across Eight Channels: Plan for roughly 1.25A average per output, but solenoid and lock inrush can spike to 3–4A for 300–500 ms. If your lock mix includes multiple high-inrush strikes, you'll bottom out fast. Verify the sum of your hold currents first.
- Regulated 12VDC Output: Voltage regulation prevents the 10.8–13.2V sag that kills door strikes and sensors. Clean power from AC input to your load, with battery charger maintaining backup capacity when mains is present.
- System Supervision + Battery Backup Charging: Dual feature: supervision tells you the supply is alive and AC is present; battery charger keeps a connected 12VDC battery topped up for extended runtime if mains fails. Wire your panel input to the supervision terminal, and a backup battery to the charger output.
Deployment Considerations:
- Size your UPS output and backup battery with care. The SMP10PM12P8 can accept 115VAC from a UPS, but if you're driving eight lock circuits full-load plus charger current during a mains outage, your UPS and battery must handle that peak draw continuously. A common mistake: undersizing the backup battery and discovering runtime is 30 minutes at full load, not the eight hours you assumed.
- Watch for charger mode. If you connect a 12V battery to the charger terminal, the supply automatically trickle-charges it when AC is present. Verify your battery voltage matches (should be 12VDC nominal) — a 24V battery will be damaged.
- Enclosure ventilation. At sustained 10A, the supply dissipates roughly 120–150W of heat in the BC300 enclosure. Warm cabinet, poor airflow, or elevated ambient temperature can trigger thermal limiting. Leave 2–3 inches of clearance above and below for convection cooling.
Deploy the SMP10PM12P8 in multi-zone access control retrofits, remote surveillance sites with multiple lock and sensor circuits, or warehouse automation facilities where a power fault on one zone must not cascade across the entire floor. It's the right choice when you need per-circuit fault isolation, battery backup, and supervision visibility in one compact unit.
