Speco Technologies PSW5 1 Amp 12VDC Regulated Power Supply
Overview
The Speco Technologies PSW5 is a 1 Amp 12VDC regulated power supply built to solve a specific deployment problem: powering 12VDC security devices without the voltage sag that occurs over long cable runs or when devices are distributed across multiple locations. Instead of running a single centralized power source to every device—creating a single point of failure and exposing you to voltage drop across hundreds of feet of cabling—the PSW5 lets you position regulated auxiliary power closer to the endpoint device itself. That matters. A 12VDC device drawing 800 mA over 150 feet of cable can lose 2–3 volts by the time power reaches it; the PSW5 eliminates that problem and keeps your access control readers, encoders, and sensor modules running at stable voltage.
Key Features
- 1 Amp 12VDC Output: Delivers up to 12 watts maximum—enough for a single mid-draw 12VDC device (an encoder, access control reader, or compact auxiliary module) or to share load across multiple low-current accessories. If you're powering a single Wiegand door reader drawing 600 mA, you have comfortable headroom; if you're feeding a relay board and a sensor simultaneously, the PSW5 stays within safe operating margins.
- Regulated DC Voltage: Output voltage remains stable across input line fluctuations and changes in load. This matters because 12VDC devices are sensitive—brownouts or voltage spikes shorten component lifespan, cause intermittent encoder glitches, or trigger false alarms on access control logic boards. Regulation protects against that.
- Filtered Power Output: Internal filtering removes AC ripple and noise from the rectified DC, critical for reducing interference in analog control lines or sensitive encoder inputs that may share conduit or racks with the power supply itself.
- AC/DC Input, 100–240 VAC: Accepts standard utility power without requiring dedicated conditioning infrastructure. Retrofit-friendly into existing installations built on mixed 12VDC and PoE tiers.
- Compact Indoor Form Factor: Designed for mounting inside control room racks, junction boxes, or wall-mounted enclosures. Small footprint saves space compared to larger enterprise power distribution units.
- Distributed Power Architecture: The PSW5 fits into traditional security system designs where multiple smaller regulated supplies replace a single large centralized unit, improving fault isolation and allowing staged power upgrades as the system grows.
Integration & Deployment Context
Deploy the PSW5 where you need auxiliary 12VDC power isolated from your main PoE camera infrastructure. Common scenarios: powering legacy analog-output encoders before they feed a network recorder; supplying access control door readers that draw 500–800 mA each; feeding low-power auxiliary devices (audio amplifiers, relay boards, sensor modules) in equipment racks. If your cable run from power source to device exceeds 100 feet—common in warehouse or multi-floor deployments—the voltage regulation prevents the sag that would otherwise occur.
The PSW5 is not a PoE injector and will not power PoE-capable cameras. If your system is already built on PoE cameras with a managed network switch infrastructure, you likely won't need this supply. However, in mixed environments combining PoE cameras with non-PoE auxiliary devices, the PSW5 provides a straightforward regulated source for the non-PoE tier. For design guidance on integrating regulated auxiliary power with PoE infrastructure, consult power infrastructure planning resources.
When to Choose a Different Model
If you require higher current capacity—2–5 amps to power multiple devices or larger access control systems—evaluate higher-output models in the Speco Technologies power supply line. If your application is outdoor or exposed to temperature extremes, confirm your mounting enclosure meets the required environmental rating; the PSW5 itself is specified for indoor installation. For single installations requiring very low wattage (under 5 watts total), verify that the PSW5's 12-watt maximum doesn't exceed your actual device draw—oversizing introduces unnecessary cost.
Frequently Asked Questions
Q: Can the PSW5 power multiple devices at once?
A: Yes, as long as the combined current draw does not exceed 1 Amp (12 watts total). For example, two access control readers drawing 400 mA each fit comfortably within the 1 Amp limit. Monitor actual device current draw and confirm the sum stays below the 1 Amp rating. If you need to power multiple devices that sum to more than 1 Amp, consider deploying a second PSW5 or evaluating higher-capacity models.
Q: What's the difference between regulated and unregulated power supplies?
A: A regulated supply maintains stable output voltage across input line fluctuations and load changes. An unregulated supply's output voltage sags when the input line dips or when load increases. For security devices—especially access control readers and encoders—voltage sag causes unreliable operation or premature failure. The PSW5 is regulated, so you get consistent 12VDC regardless of what happens on the input line.
Q: Will the PSW5 work in an existing security rack with PoE switches and IP cameras?
A: Yes. The PSW5 supplies 12VDC power independent of PoE infrastructure. Mount it in the same rack alongside your PoE switch; use it to power non-PoE auxiliary devices (door strikes, readers, relay modules) while your PoE switch handles cameras. The two power systems are isolated and do not interfere.
Q: Is there a maximum cable run length for devices powered by the PSW5?
A: Because the PSW5 delivers regulated output, you can run longer cables than you could with unregulated supplies. However, extremely long runs (over 500 feet) will still experience some voltage loss in the cable itself. As a rule, keep cable runs under 300 feet for reliable operation. If your run must exceed 300 feet, consider placing a second PSW5 closer to the remote device.
Q: Does the PSW5 include remote monitoring or status feedback?
A: The PSW5 is a passive regulated supply—it delivers stable 12VDC power but does not include built-in network connectivity or alarm relay outputs for remote monitoring. If you require power supply status reporting (e.g., low-voltage alarm), integrate the PSW5 with an access control panel or auxiliary monitoring module that supports dry-contact inputs.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I spec the PSW5 into hybrid deployments where PoE handles the IP cameras but you still need auxiliary 12VDC power for access control readers, legacy encoders, or sensor modules. The 1 Amp 12VDC regulated output solves a real problem: it eliminates voltage sag over long cable runs, which is critical in warehouse or multi-floor installations where your device might be 150+ feet from the main power source. The filtering also matters—noise on unregulated 12VDC supplies can introduce glitches in Wiegand readers or cause analog encoder errors.
Technical Highlights:
- 1 Amp 12VDC at 12W max: Comfortable headroom for a single mid-draw device (access control reader, compact encoder) or shared load across low-current accessories. A Wiegand reader drawing 600 mA or a relay board at 400 mA both fit easily.
- Regulated output voltage: Stays stable across input line sag and load changes—something unregulated supplies cannot guarantee. This translates directly to device reliability; no more intermittent encoder dropouts or access control reader lockups when the building power fluctuates.
- AC/DC 100–240V input: Works with standard utility power; no conditioning infrastructure required. Retrofit-friendly into existing security racks that already run PoE and network equipment.
Deployment Considerations:
- Verify combined device current draw does not exceed 1 Amp. If you're powering two access control readers, add their typical currents and confirm the sum stays below 1000 mA.
- The PSW5 is not a PoE injector—it's standalone 12VDC. Do not attempt to power PoE cameras directly. Use it alongside your PoE switch for non-PoE auxiliary devices only.
- Keep cable runs to powered devices under 300 feet for reliable regulation. Longer runs will experience voltage loss in the wire itself, even with a regulated supply.
- No built-in remote monitoring. If you need power supply status alarms, integrate with a panel that reads dry-contact logic from a separate monitoring module.
Deploy the PSW5 in warehouse access control systems, multi-floor installations with remote encoder stations, or any environment where you need stable 12VDC power independent of PoE infrastructure. It's not a universal solution—don't use it for high-current applications or outdoor harsh-environment mounting—but for mid-range distributed auxiliary power in climate-controlled racks, it's the right fit.
