Power Supplies for Surveillance & Access Control Systems

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

Showing Results for Power Supplies

Compare

Out of stock
HES

SKU: AQD2-8F8R1

HES AQD2-8F8R1 Power Supply 2A 12/24VDC Charger

Dual-voltage 2A power supply with 8 fused relays for access control
Special Order · Ships in 2-3 weeks

$570.00 $314.99 Save $255.01

Add to Cart
The item has been added
Free shipping over $499

$570.00 $314.99 Save $255.01

Add to quote Compare
Compare

Out of stock
HES

SKU: AQD2B

HES AQD2B Power Supply Board 2A 12/24VDC

Compact 2A power board with field-selectable 12/24VDC output and integrated charging
Special Order · Ships in 2-3 weeks

$252.00 $139.99 Save $112.01

Add to Cart
The item has been added
Free shipping over $499

$252.00 $139.99 Save $112.01

Add to quote Compare
Compare

Out of stock
HES

SKU: AQD4

HES AQD4 4A 12/24VDC Power Supply with Integrated Battery Charger

Dual-voltage 4A supply with built-in battery charger for access control
Special Order · Ships in 2-3 weeks

$443.00 $244.99 Save $198.01

Add to Cart
The item has been added
Free shipping over $499

$443.00 $244.99 Save $198.01

Add to quote Compare
Compare

Out of stock
HES

SKU: AQD4-1R

HES AQD4-1R 4A Dual Voltage Power Supply with Charger

Dual-voltage 4A supply with integrated charger for access control
Special Order · Ships in 2-3 weeks

$505.00 $278.99 Save $226.01

Add to Cart
The item has been added
Free shipping over $499

$505.00 $278.99 Save $226.01

Add to quote Compare
Compare

Out of stock
HES

SKU: AQD4-4C1R1

HES AQD4-4C1R1 Supervised Power Supply 12/24VDC

Dual-voltage supervised supply with active fault detection for access control
Special Order · Ships in 2-3 weeks

$566.00 $312.99 Save $253.01

Add to Cart
The item has been added
Free shipping over $499

$566.00 $312.99 Save $253.01

Add to quote Compare
Compare

Out of stock
HES

SKU: AQD4-4F1

HES AQD4-4F1 Supervised Power Supply 12/24VDC 4A

Supervised 12/24VDC 4A power supply with four isolated fused channels
Special Order · Ships in 2-3 weeks

$505.00 $278.99 Save $226.01

Add to Cart
The item has been added
Free shipping over $499

$505.00 $278.99 Save $226.01

Add to quote Compare
Compare

Out of stock
HES

SKU: AQD4-4F2

HES AQD4-4F2 Supervised Power Supply 12/24VDC

Supervised 12/24VDC power supply with 4-amp output for access control
Special Order · Ships in 2-3 weeks

$505.00 $278.99 Save $226.01

Add to Cart
The item has been added
Free shipping over $499

$505.00 $278.99 Save $226.01

Add to quote Compare
Compare

Add to Cart The item has been added
HES

SKU: AQD6

HES AQD6 Power Supply 6A 12/24VDC with Charger

6A regulated power supply with dual 12/24VDC output and integrated charger
In stock · Ships same business day

$494.00 $272.99 Save $221.01

Add to Cart
The item has been added
Free shipping over $499

$494.00 $272.99 Save $221.01

Add to cart Add to quote Compare
Compare

Out of stock
HES

SKU: AQD6B

HES AQD6B Power Supply Board 6A 12/24VDC Charger

Board-level 6A power supply with selectable 12/24VDC and battery charger
Special Order · Ships in 2-3 weeks

$349.00 $192.99 Save $156.01

Add to Cart
The item has been added
Free shipping over $499

$349.00 $192.99 Save $156.01

Add to quote Compare
Compare

Out of stock
HES

SKU: AQL104

HES AQL104 10A 24V DC Power Supply Module

10A 24VDC module for access control power distribution
Special Order · Ships in 2-3 weeks

$505.00 $278.99 Save $226.01

Add to Cart
The item has been added
Free shipping over $499

$505.00 $278.99 Save $226.01

Add to quote Compare
Compare

Out of stock
HES

SKU: AQL4

HES AQL4 4/3A Power Supply DV Module

Regulated 4/3A DV module for access control and door operators
Special Order · Ships in 2-3 weeks

$372.00 $205.99 Save $166.01

Add to Cart
The item has been added
Free shipping over $499

$372.00 $205.99 Save $166.01

Add to quote Compare
Compare

Out of stock
HES

SKU: B-24-5

HES B-24-5 24VDC 5AMP Battery Backup Power Supply

24VDC 5AMP battery backup for access control systems during outages
Special Order · Ships in 2-3 weeks

$213.00 $125.99 Save $87.01

Add to Cart
The item has been added
Free shipping over $499

$213.00 $125.99 Save $87.01

Add to quote Compare
Compare

Add to Cart The item has been added
Honeywell

SKU: 130063

Honeywell 130063 Printer Power Supply Cable

Genuine Honeywell OEM power cable for enterprise printer operations
- OEM-engineered connectivity for Honeywell printer fleets in 24/7 environments
- Maintains full device compatibility and protects original manufacturer coverage
- Standardizes multi-location deployments across warehouse and field operations
In stock · Ships same business day

$25.99

Add to Cart
The item has been added
Free shipping over $499

$25.99

Add to cart Add to quote Compare
Compare

Add to Cart The item has been added
Honeywell

SKU: 203-186-201

Honeywell 203-186-201 Printer Power Supply Cable

Genuine Honeywell OEM power cable for thermal & mobile printers
- Official Honeywell accessory engineered for 24/7 enterprise printer operations
- Guaranteed compatibility across Honeywell thermal and mobile printer models
- Eliminates downtime risk in warehouse, logistics, retail, and field service
In stock · Ships same business day

$200.99 $144.99 Save $56.00

Add to Cart
The item has been added
Free shipping over $499

$200.99 $144.99 Save $56.00

Add to cart Add to quote Compare
Compare

Out of stock
Honeywell

SKU: 220282-000

Honeywell 220282-000 Printer Power Supply Cable

Genuine OEM power cable for Honeywell printer systems
- Built to Honeywell's exact electrical and mechanical specifications
- Rated for 24/7 continuous duty in warehouse and retail environments
- Maintains original device warranty when used with compatible printers
Special Order · Ships in 2-3 weeks

$692.50 $498.99 Save $193.51

Add to Cart
The item has been added
Free shipping over $499

$692.50 $498.99 Save $193.51

Add to quote Compare
Compare

Add to Cart The item has been added
Honeywell

SKU: 220515-100

Honeywell 220515-100 Printer Power Supply Cable

Genuine Honeywell OEM power cable for enterprise printer systems
- Matched electrical and mechanical specs eliminate voltage drop and connector wear
- 24/7 continuous duty rated for warehouse, distribution, and field service operations
- Maintains full OEM compatibility with Honeywell printer hardware and coverage
In stock · Ships same business day

$91.38 $65.99 Save $25.39

Add to Cart
The item has been added
Free shipping over $499

$91.38 $65.99 Save $25.39

Add to cart Add to quote Compare

What to Look For When Buying

The decisions that matter most before you spec.

Amperage & Load Planning

Size your supply at 120–130% of peak load to avoid thermal shutdown and extend component life. A 24V system with five 5A devices (25A nominal) needs a 32A or 40A supply. Under-sizing is a leading cause of system failure during peak demand.

Redundancy for Life-Safety & Access Control

Single supplies fail without warning. Dual-supply designs or UPS-backed configurations ensure doors unlock and intercoms function during power anomalies. Redundancy is required by code in many jurisdictions for egress and emergency communication.

Voltage Selection & Device Compatibility

Most locks, readers, and access points run 12V or 24V; cameras vary widely. Verify every device's rated voltage before specifying. Mixing 12V and 24V systems in one cabinet requires isolated supplies or regulators to prevent cross-voltage damage.

PoE Power Budget Constraints

Standard PoE (802.3af) supplies 15.4W per port; PoE+ (802.3at) 30W; High Power (802.3bt) up to 95W. A 24-port switch can deliver only ~375W total, easily exhausted by dense camera and access-point deployments. Injectors and midspans extend capacity.

Environmental & Mounting Constraints

Outdoor cabinets and damp enclosures require sealed, conformal-coated supplies rated for temperature extremes (−20 to +70°C typical). DIN-rail mounting saves space; enclosed supplies offer better noise isolation and thermal dissipation in server rooms.

Vendor Selection & Lead Times

Brands like Honeywell, Speco Technologies, and HES dominate access-control power; Pelco and Digi International focus on surveillance and networking. Verify manufacturer support, warranty, and stock availability before design lock-in.

Technology Stack

The specs and acronyms that actually affect power supplies performance.

DC Voltage Regulation & Ripple

Quality supplies hold output within ±5% of rated voltage under load variations and input sags. Ripple (AC noise superimposed on DC output) should be <2% peak-to-peak; excessive ripple causes camera image noise and lock chatter. Look for ±5V, ±12V, ±24V stability specs in datasheets.

Current Rating & Amperage Classes

Expressed in Amps (A) at rated voltage—e.g., 24V/5A, 24V/10A, 24V/40A. Higher amperage doesn't mean faster devices; it determines how many devices can draw simultaneously. Always check individual device current draw in milliamps (mA) and sum peak totals, not averages.

Power Factor & Input Voltage Range

Industrial supplies accept 100–240V AC input (worldwide compatible) and deliver regulated DC output. Power factor >0.9 reduces heating and helps avoid utility surcharges. Check input range to ensure compatibility with generators and unclean site power.

Short-Circuit & Fuse Protection

Integral fusing (fast or slow blow) and electronic current limiting protect the supply and downstream wiring from overcurrent events. Some supplies auto-recover; others latch off and require manual reset. Verify protection mode and response time for your application.

UPS Integration & Holdup Time

Supplies with integral or stackable battery backup maintain output for 5–60 minutes during AC loss, bridging the time for graceful shutdown or backup power activation. Holdup time (hold-up capacitor reserves) is separate; typical range 10–50 ms.

PoE (Power over Ethernet) Standards

802.3af (Type 1) = 15.4W, 802.3at (Type 2/PoE+) = 30W, 802.3bt (Type 3/4, High Power) = 60–95W. Injectors and midspan splitters add PoE to non-PoE switches. Always verify endpoint compliance and total switch/injector budget vs. connected device demand.

Typical Deployment Scenarios

Small Office Access Control (Single Door)

One 12V/5A regulated supply feeds an electric strike lock, RFID reader, and request-to-exit button. Total load ~2A. A simple wall-mount supply with integral fuse handles this; add a surface-mount enclosure in humid areas. Budget: 1 supply, 1 backup fuse kit.

Mid-Size Surveillance Closet (16 IP Cameras + NVR)

A 24V/20A regulated DIN-rail supply powers four 5A PoE injectors (one per four cameras), plus the NVR's 24V auxiliary input. If cameras are all PoE-enabled and the switch is remote, injectors bridge the gap. Add a second supply for redundancy and a UPS battery module for 10-minute hold-up.

Multi-Building Campus with Distributed Access (8 Doors, 24 Cameras)

Each building requires a local 24V/10A supply (for locks, readers, intercoms) plus one or two PoE injectors per camera cluster. Cabinet-mounted DIN-rail supplies with integral breakers minimize field wiring. Specify weatherproof outdoor enclosures for exterior cabinets; trunk all power back to a central UPS for life-safety compliance.

High-Density Server & Intercom Integration

A redundant 24V/40A supply pair feeds six 24V devices (intercoms, door controllers, call stations) and distributes 12V to analog sensors via a buck regulator. Modular or multi-output supplies reduce cable clutter. Proper conduit routing and junction boxing maintain code compliance and thermal management.

Frequently Asked Questions

What size power supply do I need for my system?

Add up the current draw (in milliamps or amps) of every device connected to that supply—cameras, locks, readers, intercoms. Multiply by 1.25 (safety factor) and round up to the next standard supply size (e.g., 5A, 10A, 20A, 40A). Always verify supply and load voltage match exactly.

Can I use one power supply for mixed 12V and 24V devices?

No. Single outputs are isolated; mixing voltages risks damage. Use separate regulated supplies for each voltage, or a multi-output supply with isolated rails. If you must share a cabinet, use a buck converter (24V down to 12V) downstream of a 24V primary supply, but size the primary for total current demand.

What's the difference between a regular power supply and a UPS-backed supply?

A regular regulated supply converts AC to clean DC and stops when AC fails. A UPS-backed supply includes integral or stackable battery modules that maintain DC output for minutes after AC loss, allowing orderly shutdown or switchover to backup power. Essential for access control and emergency intercoms.

Do I need a PoE injector if my switch already has PoE?

Not necessarily, but injectors solve two common problems: (1) extending PoE to non-PoE switches, and (2) supplementing insufficient switch PoE budget. A 24-port PoE+ switch can only deliver ~375W total; dense deployments often need additional injectors per camera cluster. Plan your PoE budget carefully upfront.

What does ±5% voltage regulation mean?

The supply guarantees output stays within ±5% of rated voltage (e.g., 24V ±1.2V = 22.8–25.2V) across load and input variations. Tighter specs (±3%) cost more but reduce noise and improve camera image stability. Cameras typically tolerate ±10%; locks are pickier (±5% or better).

How do I mount a power supply in an outdoor cabinet?

Use a DIN-rail mounted supply inside an IP65-rated enclosure. Ensure the enclosure has ventilation or a thermostat fan to keep internal temperature below the supply's rating (typically 70°C max). Add a surge protector or SPD at the AC input, and run conduit from the cabinet to devices using conduit adapters and gang plates for strain relief.

Power Supplies

Plan Your Deployment

Showing Results for Power Supplies

HES AQD2-8F8R1 Power Supply 2A 12/24VDC Charger

HES AQD2B Power Supply Board 2A 12/24VDC

HES AQD4 4A 12/24VDC Power Supply with Integrated Battery Charger

HES AQD4-1R 4A Dual Voltage Power Supply with Charger

HES AQD4-4C1R1 Supervised Power Supply 12/24VDC

HES AQD4-4F1 Supervised Power Supply 12/24VDC 4A

HES AQD4-4F2 Supervised Power Supply 12/24VDC

HES AQD6 Power Supply 6A 12/24VDC with Charger

HES AQD6B Power Supply Board 6A 12/24VDC Charger

HES AQL104 10A 24V DC Power Supply Module

HES AQL4 4/3A Power Supply DV Module

HES B-24-5 24VDC 5AMP Battery Backup Power Supply

Honeywell 130063 Printer Power Supply Cable

Honeywell 203-186-201 Printer Power Supply Cable

Honeywell 220282-000 Printer Power Supply Cable

Honeywell 220515-100 Printer Power Supply Cable

Browse by Product Family

What to Look For When Buying

Technology Stack

Typical Deployment Scenarios

Top Brands for Power Supplies

Frequently Asked Questions

Related Categories

Engineering Reading