Altronix SMP5CTX 12/24VDC 4A Power Supply
The Altronix SMP5CTX is a single-output regulated DC power supply designed for remote and distributed security infrastructure deployments, particularly in BC300 cabin environments. It accepts dual-voltage AC input (115/220VAC) and delivers a selectable 12 or 24VDC output at up to 4A continuous current. This voltage flexibility lets you standardize on a single unit model across mixed-voltage site requirements—avoiding inventory duplication and simplifying logistics in multi-location deployments.
Key Features
- Selectable 12 or 24VDC Output: Field-configurable voltage means you can match legacy 12V access control panels, LED lighting arrays, or IP-based equipment running on 24V—all from one SKU. Reduces the need to stock separate 12V and 24V models in distributed warehouses.
- 4A Continuous Current Rating: Delivers up to 96 watts of regulated power at 24VDC (48 watts at 12VDC). Sufficient for typical cabin-scale loads: network camera plus entry reader, or multiple door strike locks on a single feed.
- Dual AC Input Acceptance (115/220VAC): Overseas and domestic installations won't require separate SKUs. Auto-sensing input voltage eliminates manual jumper changes on-site, reducing installation error and support calls.
- Single Regulated Output: One output channel keeps the design compact and cost-controlled. If your site requires multiple isolated feeds, consider power supplies with dual or quad outputs.
- BC300 Cabin-Rated Enclosure: Purpose-built for remote outdoor cabinet mounting. The enclosure design handles typical environmental stressors in non-conditioned shelter scenarios—moisture ingress, vibration, and thermal cycling. Not rated for direct submersion or extreme industrial washdown; confirm site conditions before deployment.
- Lifetime Limited Warranty: Manufacturer-backed coverage provides confidence in extended remote deployments where field replacement logistics are costly. Covers defects in materials and workmanship under normal operating conditions.
Integration & Compatibility
The SMP5CTX integrates into power infrastructure systems requiring regulated, isolated DC feed. It is compatible with industry-standard security equipment rated for 12 or 24VDC operation: IP-based access control panels, PoE midspan injectors (when the PoE injector itself requires external DC), LED warning strobes, and outdoor-rated network cameras that draw DC auxiliary power alongside PoE. Verify load current draw before installation; total connected device current must not exceed 4A at the selected output voltage.
When sizing your deployment, account for inrush current during reader relay activation or lock solenoid strike—these can spike above steady-state draw. If your site has multiple cabins, the SMP5CTX can be deployed per cabin for distributed resilience, avoiding single-point AC feed failure across a large site.
When to Choose a Different Model
If your site requires redundant or backup power (dual supplies with automatic failover), or if you need multiple isolated output channels (e.g., separate 24V for cameras and 12V for legacy panels), consider consulting the full Altronix power supply catalog for multi-output or redundancy-capable variants. If your load exceeds 4A or you require monitoring/telemetry (output voltage sensing, current limiting alerts), specify a higher-capacity or managed variant instead.
Frequently Asked Questions
Q: What is the maximum load current I can draw from the SMP5CTX?
A: 4A continuous at either 12 or 24VDC. This translates to 48W at 12V or 96W at 24V. Verify all connected devices' steady-state and inrush current before deployment.
Q: Can I use the SMP5CTX with both 115VAC and 220VAC without reconfiguration?
A: Yes. The SMP5CTX accepts both 115VAC and 220VAC input automatically; no jumpers or field reconfiguration needed. This simplifies deployments across regions with different AC standards.
Q: Is the SMP5CTX suitable for outdoor cabinet use?
A: Yes, it is rated for BC300 cabin enclosure mounting. It is designed to handle outdoor environmental stressors typical of non-conditioned shelters (moisture, temperature swing, vibration). Confirm your specific site conditions; extreme washdown, direct submersion, or salt-spray environments may require additional protection or a different model.
Q: Does the SMP5CTX include remote monitoring or status indicators?
A: The SMP5CTX is a straightforward regulated supply without built-in remote telemetry, voltage sensing outputs, or network connectivity. It is designed for set-and-forget deployment. If you require output voltage monitoring or power-loss alerting, consult the broader Altronix power management line for intelligent power modules.
Q: What warranty does the SMP5CTX carry?
A: Lifetime Limited Warranty covering defects in materials and workmanship under normal operating conditions. Confirm specific terms with the manufacturer or specialty distributor; typical exclusions apply to physical damage, misuse, or operation outside rated voltage/current limits.
Q: Can I parallel multiple SMP5CTX units for higher current?
A: Paralleling unmanaged supplies is not recommended without external load-sharing circuitry. For higher current budgets, specify a higher-capacity single supply or a managed multi-output unit from the Altronix line instead.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Altronix SMP5CTX hits a specific niche: single-output, field-selectable voltage for remote cabin sites where you're running mixed 12V and 24V loads. The dual AC input acceptance is the real win here—overseas installations or sites fed from different utility phases won't force you to stock two separate SKUs or mess with jumpers on-site.
Technical Highlights:
- 4A Continuous Output: 96 watts at 24V is enough to feed a single networked camera plus an access reader, or a small array of door strikes on legacy 12V infrastructure. Inrush spikes on solenoid activation can briefly exceed steady state, so don't assume you can load the supply to exactly 4A and call it done.
- Selectable 12/24VDC: Field-configurable voltage eliminates the need to carry separate 12V and 24V models into the field. For multi-cabin deployments, this cuts spare parts inventory and simplifies standardization across your fleet.
- Dual AC Input (115/220VAC): Auto-sensing input means the SMP5CTX works on either domestic or overseas AC without manual reconfiguration. This is a genuine logistics advantage in international or multi-region deployments.
Deployment Considerations:
- The SMP5CTX is optimized for set-and-forget operation in non-conditioned outdoor cabins. It lacks remote monitoring, status outputs, or network telemetry. If your site requires power-fail alerting or voltage sensing feedback to a central hub, you'll need a managed power module or secondary monitoring relay instead.
- BC300 cabin rating covers typical environmental stressors (moisture, vibration, temperature swing) but not extreme washdown, submersion, or salt-spray. Verify your site's actual conditions—if you're near coast or heavy-wash environments, consider adding protective enclosure barriers or specifying a hardened variant.
- At 4A maximum, the supply is not a fit for high-current loads (e.g., multiple 24V lock strikes, LED arrays, or powered gate operators). You'll need to right-size load draw before installation; undersizing the supply leaves no margin for inrush or future expansion.
The SMP5CTX is strongest in distributed cabin deployments—utility stations, remote gate houses, warehouse perimeter cabinets—where simplicity and voltage flexibility outweigh the need for monitoring and redundancy. If your site demands dual-feed failover or multi-output isolation, step up to a higher-tier Altronix power platform instead.
