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.
Showing Results for Power Supplies
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Add to Cart The item has been addedAxis
SKU: 5505-731
Axis 5505-731 DIN Rail 25W Power Supply
12V/2.1A DIN rail supply for distributed Axis camera and NVR systems
- 25W output powers multiple compact cameras or mid-range NVRs without PoE
- 35mm DIN rail mount fits standard cabinets; minimal depth, ready to install
- Wide AC input range operates globally without step-down converters
In stock · Ships same business day$129.00 $128.99 Save $0.01The item has been added -
Add to Cart The item has been addedAxis
SKU: 5503-104
Axis T8007 24V DC Power Supply - 5503-104
24V DC power supply for Axis IP cameras and indoor surveillance gear
- 36W output at 1.5A — powers multiple fixed cameras or single high-draw device
- Desktop or wall-mount form factor fits cabinets and behind-camera enclosures
- Built for Axis network cameras, switches, and compatible surveillance equipment
In stock · Ships same business day$73.00 $72.99 Save $0.01The item has been added -
Axis
SKU: 01677-001
Axis DIN PS24 480W Power Supply - 01677-001
480W DIN rail supply with dual 12/24 VDC for multi-camera systems
- 480W capacity powers multiple Axis IP cameras and NVRs simultaneously
- Dual voltage outputs (12 VDC and 24 VDC) eliminate need for converters
- DIN rail mount fits standard surveillance cabinet enclosures
$339.00 $328.99 Save $10.01The item has been added -
2N
SKU: 01435-001
2N SIP Audio Power Supply - 01435-001
Compact SIP audio power supply with universal 100-240V input and dual protection
- Adjustable voltage output adapts to various SIP devices without multiple SKUs
- Overload and overvoltage protection safeguards connected equipment from electrical faults
- Tiny 117×40×30mm footprint at 0.14kg fits tight wall-mount and panel installations
$79.00 $78.99 Save $0.01The item has been added -
Axis
SKU: 01508-001
Axis 01508-001 Mains Adapter 48V DC 90W
48V DC 90W mains adapter for AXIS Companion Recorder
- 90W output at 48V DC powers recorder and connected devices
- Purpose-built for AXIS Companion Recorder installations
- AC mains input with stable power for surveillance continuity
$119.00 $118.99 Save $0.01The item has been added -
Axis
SKU: 01169-001
Axis DIN CP-D 24/4.2 100W Power Supply - 01169-001
100W DIN rail power supply for multi-camera Axis surveillance setups
- 24V DC regulated output at 4.2A powers multiple IP cameras simultaneously
- Compact DIN rail mount fits standard distribution cabinets for centralized power
- 100W capacity supports mixed surveillance hardware in enterprise deployments
$179.00 $173.99 Save $5.01The item has been added -
Axis
SKU: 02632-001
Axis PS56 480W DIN Power Supply - 02632-001
480W DIN supply for Axis D8208-R with AC/DC input flexibility
- 56V DC output at 480W supports high-power Axis installations
- AC 100-240V or DC 80-370V input adapts to any power source
- IP65 rated and operates -25 to 70°C for outdoor/harsh deployments
$419.00 $405.99 Save $13.01The item has been added -
Add to Cart The item has been addedAxis
SKU: 5503-661
Axis T8008 PS12 Power Supply Unit - 5503-661
Regulated AC power supply for Axis Q60XX-C series cameras
- AC 90–264V input with 47–63Hz support for global electrical standards
- Operating range of -40 to +75°C handles indoor and outdoor deployments
- Compact form factor integrates into surveillance system architectures
In stock · Ships same business day$519.00 $502.99 Save $16.01The item has been added -
ACTi
SKU: PPBX-0011
Acti PPBX-0011 Power Adapter AC 100–240V Universal
Universal 12V PoE adapter for ACTi cameras, wall or rack mount
- AC 100–240V input with DC 12V PoE 802.3af output for global deployments
- Wall bracket or 19" rack mount options for flexible installation configurations
- Universal ACTi connector compatible with IP cameras and network devices
$86.00 $85.99 Save $0.01The item has been added -
ACTi
SKU: PPBX-0016
Acti PPBX-0016 Power Adapter AC 100-240V
Universal PoE adapter for Acti cameras, AC 100–240V input
- 12V/5A output with universal connector for broad device compatibility
- PoE 802.3af standard supports Acti A950 cameras and mixed PoE systems
- Global voltage range AC 100–240V eliminates region-specific power concerns
$177.00 $134.99 Save $42.01The item has been added -
ACTi
SKU: R707-X0004
Acti R707-X0004 Power Adapter AC 100-240V
Rack-mount AC adapter for ENR-010P with universal 100–240V input
- AC 100–240V universal input eliminates regional voltage concerns globally
- 19-inch rack-mount form factor fits standard enterprise equipment racks
- PoE-capable design integrates with IP camera deployments and centralized power
$266.00 $200.99 Save $65.01The item has been added -
Aiphone
SKU: DA-1AS
Aiphone DA-1AS 1-Call Audio Door Phone Set with Power Supply
2-wire audio intercom with handset + hands-free door station and release control
$310.00 $300.99 Save $9.01The item has been added -
Aiphone
SKU: IS-PU-UL
Aiphone IS-PU-UL 48V DC Power Supply
48V DC power supply for Aiphone intercom systems, 120W output
$912.00 $884.99 Save $27.01The item has been added -
Add to Cart The item has been addedAltronix
SKU: AL100UL
Altronix AL100UL 12VDC 0.75A Linear Power Supply
12VDC 0.75A regulated supply with battery backup for alarms
- 750mA continuous output with short-circuit and thermal protection
- Charges internal or external sealed lead-acid batteries up to 12AH
- Form C relay contacts monitor AC failure and battery status via LED
In stock · Ships same business day$183.14 $105.99 Save $77.15The item has been added -
Altronix
SKU: AL1012ACM220
Altronix AL1012ACM220 Multi-Output 12VDC Power Supply
220VAC to 12VDC supply with 8 isolated fused outputs for security systems
- 8 independently fused relay outputs prevent single-channel faults from affecting other zones
- 10A total capacity across all outputs with regulated 12VDC for stable sensor and control power
- Integrated battery charging support enables UPS functionality for backup power during mains loss
$657.68 $385.99 Save $271.69The item has been added -
Altronix
SKU: AL1012ACMCB220
Altronix AL1012ACMCB220 12VDC Power Supply with Battery Backup
12VDC 10A supply with 8 isolated outputs and battery backup
- Eight independent 12VDC outputs prevent single-load failures from affecting other circuits
- 10A total capacity across 8 isolated channels for multi-subsystem security deployments
- Integrated battery backup with automatic switchover for uninterrupted power to critical loads
$657.68 $378.99 Save $278.69The item has been added