Power Supplies
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Add to Cart The item has been addedELK Products
SKU: ELK-SS30
ELK Products ELK-SS30 Security Accessory
Modular door control and reader interface for ELK access systems
- 8VDC ELK security accessory with 1A draw at 13.8 VDC
- Operates -20 to 60 degrees C for unconditioned interior installs
- 8 x 4.7 x 9.6 in (200 x 120 x 245 mm) white housing for wall mount
$46.99The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-SS36
ELK Products ELK-SS36 ELK Security Accessory
Professional security accessory with heavy-duty magnet mounting
- Speaker with heavy-duty magnet and Mylar cone for ELK panels
- 500 mA draw at 13.8 VDC - low aux power impact
- UL-listed (file S24906) compact 4.25 x 4.25 x 2.13 in housing
$28.99The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-TRG1640
ELK Products ELK-TRG1640 16-Output 45VA Transformer
16-output 45VA transformer with regulated 5Vac for distributed access control
- 16-output 45VA transformer distributes 5Vac across 16 channels
- Drives access readers, credential processors, and aux loads
- 120VAC input with regulated 5Vac output per channel
$42.99The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-TRG2440
ELK Products ELK-TRG2440 24Vac 40VA Power Transformer
24Vac 40VA transformer for ELK security panel power distribution
- 24Vac 40VA power transformer for ELK control panels and strikes
- Regulated output supports door strike inrush current draws
- Drops into residential and commercial ELK access deployments
$43.99The item has been added -
ELK Products
SKU: ELK-W119
ELK Products ELK-W119 Dual Battery Wires for M1 Controls
Dual battery wire assembly for ELK M1 control panel backup power
$31.99The item has been added -
FLIR
SKU: 4124857
FLIR Power Supply Assy 24VAC - 4124857
- 24VAC OEM power supply for FLIR security equipment
- 100-240VAC input handles US and international mains
- UL/CE/FCC compliance certifications for commercial install
$769.00 $562.99 Save $206.01The item has been added -
Geovision
SKU: 47-A2243RE-5C61
Geovision 47-A2243RE-5C61 GV-SD Power Supply
- OEM Geovision component ensures verified compatibility with GV-SD series IP PTZ cameras.
- Regulated power output maintains stable camera operation over extended deployment periods.
- Suitable for indoor and outdoor installations, supporting professional integrator deployments.
$64.00 $63.99 Save $0.01The item has been added -
Geovision
SKU: 47-B2123AF-90U3
Geovision 47-B2123AF-90U3 Convertible Power Adapter
- Convertible connector design supports multiple Geovision IP camera models from one adapter.
- OEM Geovision accessory (MPN 47-B2123AF-90U3) ensures compatibility across IPCAM product lines.
- Reduces spare-parts inventory by eliminating separate power supplies for mixed camera configs.
$43.00 $42.99 Save $0.01The item has been added -
Geovision
SKU: 51-PSD2200-P01U
Geovision 51-PSD2200-P01U GV-SD220 Power Adapter 24V
- Delivers regulated 24V DC output to maintain stable operation of GV-SD220 devices.
- Purpose-built replacement adapter eliminates guesswork in power-spec matching.
- Verify connector type and voltage rating match your specific GV-SD220 unit before install.
$90.00 $89.99 Save $0.01The item has been added -
Geovision
SKU: 72-PS500-R8P
Geovision 72-PS500-R8P Redundant Power Supply
- 500W redundant supply eliminates single points of failure in NVR/DVR deployments.
- Automatic failover activates instantly if primary supply fails — no operator intervention.
- Hot-swap capability lets you service one unit while the second maintains live power.
$1,160.00 $747.99 Save $412.01The item has been added -
Geovision
SKU: 81-P1030-001
Geovision 81-P1030-001 Power Box AC24AC 72VA
- Delivers regulated 24V AC at 72VA to support PTZ motors and auxiliary heater loads.
- Isolation transformer design blocks ground-loop interference and mains transient surges.
- Thermal overload protection guards against sustained overcurrent from motor jams or faults.
$147.00 $146.99 Save $0.01The item has been added -
Geovision
SKU: GV-PA191-55
Geovision GV-PA191 PoE Power Adapter - GV-PA191-55
802.3af PoE adapter for Geovision cameras and ONVIF devices indoors
- Injects 802.3af PoE up to 19W, powering single cameras where switch PoE budget is insufficient.
- Reaches IP devices up to 100 m over CAT5, eliminating the need for a local power outlet.
- Compact 43×69×40 mm indoor adapter rated −10°C to 50°C with a 3-year warranty.
$48.00 $33.99 Save $14.01The item has been added -
Geovision
SKU: GV-POWER-47
Geovision GV-POWER Convertible Power Adapter - GV-POWER-47
Universal AC adapter for Geovision IP cameras, 100-240VAC worldwide
- Accepts 100–240VAC input, supporting deployments across all major global electrical standards.
- 3-year warranty reduces spare-parts risk across multi-site Geovision camera rollouts.
- Compatible with GV-VMS (up to 64 channels) and GV-CMS centralized monitoring environments.
$31.99The item has been added -
Geovision
SKU: GV-POWER-72
Geovision GV-POWER Redundant Power Supply - GV-POWER-72
500W redundant power supply with dual failover for Geovision NVR/DVR systems
- 500W redundant PSU eliminates single-point failure across 32–64 camera deployments.
- Rack-mounts in standard 19-inch enclosures; compact at 10.50 x 7.75 x 4.00 in, 4.5 lb.
- Compatible with GV-VMS and GV-VMS Pro; backed by a 3-year warranty.
$784.99 $765.99 Save $19.00The item has been added -
Geovision
SKU: GV-PSD2200
Geovision GV-PSD2200 Power Supply Accessory
24V regulated power supply for GV-SD220 surveillance systems
- Delivers stable 24V DC regulated power, eliminating voltage sag in GV-SD220 deployments.
- Rated for indoor and outdoor installation, supporting multi-zone surveillance network builds.
- Drop-in compatible with GV-SD220 architecture for expansion or failed power node replacement.
$68.99 $67.99 Save $1.00The item has been added -
Geovision
SKU: GV-SD-47
Geovision GV-SD GV-SD Power Supply - GV-SD-47
DC power supply for Geovision IP PTZ camera systems
- Delivers regulated DC power to prevent motor stalls and brownout glitches in PTZ cameras.
- Supports Geovision GV-PTZ, GV-EBDP, and GV-TBLP series PTZ camera families.
- Backed by a 3-year warranty; compact 9×5×2 in form factor fits standard enclosures.
$49.99 $48.99 Save $1.00The 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.