Power Supplies
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Altronix
SKU: SMP3PMP16
Altronix SMP3PMP16 16-Output Supervised 12VDC Power Supply
16-output 12VDC board with AC/battery supervision for security infrastructure
$383.92 $224.99 Save $158.93The item has been added -
Altronix
SKU: SMP3PMP4
Altronix SMP3PMP4 Supervised 12VDC Power Supply Charger
12VDC supervised power supply with integrated battery charging and AC-fail monitoring
$343.98 $199.99 Save $143.99The item has been added -
Altronix
SKU: SMP3PMP8
Altronix SMP3PMP8 8-Output 12VDC Supervised Power Supply
8-output 12VDC supply with integrated battery backup and AC supervision
- Eight independent 12VDC outputs configurable at 0.5A, 4A, or 6A reduce panel count.
- Supervised relay contacts report AC fail, low battery, and battery presence in real time.
- Integrated charger switches to battery backup automatically on AC loss; lifetime warranty.
$349.65 $204.99 Save $144.66The item has been added -
Altronix
SKU: SMP3ULB
Altronix SMP3ULB 6/12/24VDC 2.5A Power Supply Charger Board
Selectable 6/12/24VDC board supply with 2.5A for access control
- Selectable 6, 12, or 24VDC output at 2.5A suits diverse low-voltage security loads.
- Integrated charger and supply on one board reduces component count in access control builds.
- Lifetime Limited Warranty covers the board for the duration of the installation lifecycle.
$60.28 $59.99 Save $0.29The item has been added -
Altronix
SKU: SMP3WP
Altronix SMP3WP Outdoor DC Power Supply/Charger
Outdoor 12V/3A DC supply with integrated battery charger, NEMA 4X rated
- NEMA 4X-rated enclosure protects electronics in exposed outdoor deployments.
- Integrated battery charger enables seamless 12V/3A backup power at the edge.
- Pole-mount design supports field installation without a dedicated equipment room.
$532.79 $343.99 Save $188.80The item has been added -
Add to Cart The item has been addedAltronix
SKU: SMP5
Altronix SMP5 Selectable Voltage Power Supply Charger
Selectable 12/24VDC board supply for mixed-voltage security deployments
- Selectable 12/24VDC output lets one SKU cover mixed-voltage deployments.
- Delivers up to 10A at 24VDC—sufficient for solenoid locks and multi-device zones.
- 3"×3.5"×2" board form fits directly into OEM enclosures, saving panel space.
In stock · Ships same business day$96.25 $95.99 Save $0.26The item has been added -
Add to Cart The item has been addedAltronix
SKU: SMP5CTX
Altronix SMP5CTX 12/24VDC 4A Power Supply
Selectable 12/24VDC 4A supply for dual-voltage cabin deployments
In stock · Ships same business day$288.38 $185.99 Save $102.39The item has been added -
Altronix
SKU: SMP5E
Altronix SMP5E 1-Output 4A Power Supply with Battery Backup
Single-output 4A supply with field-selectable 6/12/24VDC and integrated battery backup
- Field-selectable 6/12/24VDC output eliminates swapping units across mixed-voltage sites.
- 4A continuous output drives multiple door strikes, readers, and controllers simultaneously.
- Integrated battery charging switches seamlessly to backup power on AC failure—no external UPS needed.
$160.10 $93.99 Save $66.11The item has been added -
Add to Cart The item has been addedAltronix
SKU: SMP5PM
Altronix SMP5PM 4A Supervised 12/24VDC Power Supply
Selectable 12/24VDC 4A supply with integrated battery backup and supervision
In stock · Ships same business day$142.04 $141.99 Save $0.05The item has been added -
Add to Cart The item has been addedAltronix
SKU: SMP5PMCTX
Altronix SMP5PMCTX 12VDC 4A Supervised Power Supply
12VDC 4A supervised power supply with battery backup and AC fail alarm
In stock · Ships same business day$327.17 $189.99 Save $137.18The item has been added -
Altronix
SKU: SMP5PMP16
Altronix SMP5PMP16 16 Fused Outputs Supervised Power Supply
16-channel 12VDC supervised supply with battery backup for access control
- 16 independently fused 12VDC outputs isolate faults to individual circuits.
- Accepts 16–28VAC input and supports up to 6A rails for mixed load deployments.
- Supervised AC fail, low battery, and battery presence monitoring with backup support.
$404.25 $236.99 Save $167.26The item has been added -
Altronix
SKU: SMP5PMP16CB
Altronix SMP5PMP16CB 16 PTC Outputs Supervised Power Supply
16-output supervised power supply, 12/24VDC switchable, dual AC input
$404.25 $236.99 Save $167.26The item has been added -
Altronix
SKU: SMP5PMP4CB
Altronix SMP5PMP4CB 4A Dual-Voltage Supervised Power Supply
4A dual-voltage supply with 4 individually supervised outputs for security systems
- Four PTC-protected outputs operate independently, so one fault never kills the full circuit.
- Selectable 12/24VDC output and 115/220VAC input support both domestic and international installs.
- Battery backup and per-channel supervision satisfy life-safety monitoring requirements.
$364.32 $213.99 Save $150.33The item has been added -
Altronix
SKU: SMP5PMP8
Altronix SMP5PMP8 Dual 12VDC Power Supply/Charger
Dual 12VDC supply with 8 independent channels and battery backup
- Eight independent 12VDC outputs let you isolate loads and avoid single-point failures.
- Dual rails segregate critical circuits; AC fail and low-battery supervision trigger alerts.
- Integrated battery charger eliminates a separate module, simplifying mid-scale deployments.
$369.98 $216.99 Save $152.99The item has been added -
Altronix
SKU: SMP5PMP8CB
Altronix SMP5PMP8CB 12/24VDC 4A 8-Output Cabinet Power Supply
Cabinet power supply with 8 isolated outputs, 12/24VDC selectable
- Eight PTC-protected outputs isolate faults so one overloaded device won't drop others.
- Selectable 12/24VDC input and output lets one SKU serve mixed-voltage security panels.
- Cabinet form factor integrates directly into standard enclosures for clean, centralized distribution.
$369.98 $216.99 Save $152.99The item has been added -
Add to Cart The item has been addedAltronix
SKU: SMP5WP
Altronix SMP5WP Dual-Output 4A Power Supply
Dual-voltage 4A DIN-rail supply for 12/24VDC security systems
- Selectable 12/24VDC output at 4A continuous supports door locks, relays, and intercoms.
- Universal 115V/230VAC input eliminates separate SKUs across regional deployments.
- DIN-rail mount integrates directly into control enclosures alongside terminal and relay modules.
In stock · Ships same business day$597.62 $350.99 Save $246.63The item has been added
Power Supplies
Power supplies provide stable and regulated power for surveillance cameras, access control devices, and intercom systems. Selecting the proper voltage, amperage, and redundancy configuration ensures reliable operation and minimizes system downtime in commercial environments.
Plan Your Deployment
- Voltage and amperage requirements for connected devices
- Centralized vs distributed power architecture
- Redundancy and failover considerations
- Indoor vs outdoor installation requirements
- Code compliance and surge protection planning
Power Supplies — Engineering-Grade Power Distribution for Commercial Deployments
This category covers 193 working models of power supplies sourced manufacturer-direct or through channel-direct US distribution. Build the rest of your system around the architectural choices below — compatibility, environmental rating, and lifecycle decisions made here propagate through every downstream component you specify.
What to Look For
Voltage and amperage requirements come from the connected load. Cameras and access-control hardware typically use 12VDC or 24VAC; PoE-powered devices need a PoE injector or switch instead of a traditional supply. Sum the steady-state current draw across all devices on the supply, then add 25-30% headroom for inrush and growth. Undersized supplies fail quickly under sustained load.
Linear, switching, and PoE supplies have different efficiency, noise, and form-factor characteristics. Switching supplies are smaller and cooler-running but introduce switching noise that can affect audio circuits. Linear supplies run quieter electrically but generate more heat and weigh more. PoE injectors and switches are standard for IP cameras and access readers — pick by port count, power budget, and management capability.
Output redundancy and battery backup are the distinguishing features at the high end. Multi-output supplies with individually-fused outputs isolate device failures so one shorted camera doesn't take down the rest. Battery-backed supplies maintain operation during AC failure — code-mandated on most access-control and emergency systems. Sizing the battery for actual runtime requirement is more important than headline Ah capacity.
Enclosure type, mounting, and certification matter for code compliance and field reliability. NEMA-rated enclosures for outdoor/wet locations; lockable enclosures for tamper-resistant installs. UL 294 listing for access-control supplies; UL 1481 for fire-alarm supplies. Verify the AHJ's listing requirements before ordering — many jurisdictions reject non-listed supplies in commercial life-safety installs.
Key Specs in This Category
| Spec | Available Options |
|---|---|
| Resolution | 4MP, 2MP, 0MP, 8MP, 5MP, 20MP+ |
| IP Rating | IP65, IP68, IP66, IP67 |
| Connectivity | Wired, Bluetooth, Wi-Fi |
| Power | AC/DC, PoE+, PoE |
| Storage | microSD |
| Type | Power Supply, Accessory, Power Accessories, Switch, Controller, Mobile Computer, Power Adapter, DVR |
Top Brands in This Category
Frequently Asked Questions
Do I need a battery backup on my power supply?
For access control on egress doors, fire alarm systems, and most security-monitored installations — yes, code requires it. Battery backup runtime is typically 4 hours minimum for access control (24 hours for fire alarm). For surveillance cameras alone, battery backup is optional but recommended; a 30-minute UPS bridge handles most utility-power glitches and prevents reboot cycles that affect recorded video continuity.
What size power supply do I need for 8 PoE cameras?
If using a PoE switch, sum the per-camera PoE class budget: 8 cameras at 802.3at (PoE+, 30W max) need a switch with at least 240W total PoE budget. Add 20-30% headroom. Many 8-port PoE+ switches advertise 130W total budget — undersized for full-load 802.3at use. For 802.3bt (PoE++, 60-90W) devices like multi-imagers or large PTZs, plan even more aggressively.
Can I mix 12VDC and 24VAC devices on one supply?
Multi-output supplies (Altronix AL600ULPD8, LifeSafety FPO75) provide both 12VDC and 24VAC outputs from a single chassis, each individually fused. Mixing the two on a single output is not safe — voltage and waveform are incompatible. For larger sites, separate dedicated supplies per voltage simplify troubleshooting and isolate failures.
How do I calculate voltage drop on long cable runs?
Voltage drop depends on conductor gauge, current draw, and cable length. For 12VDC at 2A over 100 feet, 18 AWG drops roughly 1V (5%) — borderline acceptable. 16 AWG drops half that. For runs over 100 feet at sustained current, use a 24V supply at the source and step down at the device, or move to PoE which tolerates longer runs at typical commercial distances.
What's the difference between a power supply and a PoE injector?
A traditional power supply delivers DC (or AC) to a device through a dedicated power cable. A PoE injector adds DC power to the unused pairs of an Ethernet cable, so the device receives both power and data on the same Cat5e/Cat6. PoE simplifies installation and is the dominant choice for IP cameras and modern access readers. Traditional supplies are still preferred for high-current devices like maglocks and analog camera installations.
Need help choosing? Talk to a Senior Specialist — direct line 877-277-7147 or request a quote.