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

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Altronix

SKU: ALTV2416350

Altronix ALTV2416350 16-Output 24VAC Power Supply

16-output 24VAC wall-mount supply for multi-camera CCTV systems
- 16 independently fused outputs at 3.5A max per channel, 350VA total
- 24VAC or 28VAC selectable output for cameras, heaters, accessories
- Wall-mount form factor with surge suppression for compact installations
$497.36 $291.99 Save $205.37

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Altronix

SKU: ALTV2416350CB

Altronix ALTV2416350CB 16-Output CCTV Power Supply

16-output CCTV power supply for mid-scale camera deployments
- 16 independent PTC-protected outputs with individual circuit protection
- Centralized architecture in compact cabinet-mount form factor
- 24VAC input with non-UL rated construction for cost-effective installations
$452.00 $291.99 Save $160.01

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Altronix

SKU: ALTV2416600

Altronix ALTV2416600 16-Output 24VAC Power Supply

16-output 24VAC wall-mount supply for distributed security power
- 16 independently fused outputs isolate each circuit from failures
- 24VAC output compatible with CCTV cameras and access control devices
- Wall-mount form factor fits tight spaces in security installations
$683.96 $399.99 Save $283.97

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Altronix

SKU: ALTV2416600CB

Altronix ALTV2416600CB 16-Output CCTV Power Supply

16-output 24/28VAC power supply for distributed CCTV camera systems
- 16 independent outputs with individual fuse protection per channel
- 28-amp aggregate capacity with selectable 24VAC or 28VAC output voltage
- Centralized distribution for mid-to-large camera arrays up to 16 cameras
$621.59 $400.99 Save $220.60

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Altronix

SKU: ALTV2416600UL

Altronix ALTV2416600UL 16-Output 24/28VAC Power Supply

16-output 24/28VAC wall-mount supply for multi-camera security systems
- 16 independently fused outputs with selectable 24VAC or 28VAC voltage
- 25A maximum current capacity on 115VAC input for distributed power delivery
- BC300 wall-mount enclosure fits standard installation footprints
$694.77 $404.99 Save $289.78

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Altronix

SKU: ALTV2416600UL3

Altronix ALTV2416600UL3 16-Output 600W AC Power Supply

16-output 600W wall-mount AC supply for multi-camera security systems
- 16 independent fused outputs isolate circuits for individual protection
- 600W total capacity powers distributed CCTV and access control loads
- UL Listed and CE approved wall-mount design for compact installations
$694.77 $406.99 Save $287.78

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Altronix

SKU: ALTV2416600ULCB

Altronix ALTV2416600ULCB 24VAC 25A 16-Output Power Supply

16-output 24/28VAC wall supply for distributed access control and security loads
- 16 individually PTC-protected outputs with short-circuit supervision per circuit
- 25A total capacity switchable between 24VAC and 28VAC for voltage-compensated systems
- 115VAC single-phase input, BC300 wall-mount form factor for space-constrained installations
$631.41 $406.99 Save $224.42

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Altronix

SKU: ALTV2416CB

Altronix ALTV2416CB 16-Output 24VAC Power Supply

16-output 24VAC wall-mount supply for distributed security power
- 16 independent 24VAC outputs for multi-camera and access control systems
- Wall-mount form factor saves space in small to mid-size installations
- AC-powered input connects directly to standard facility wall power
$353.07 $205.99 Save $147.08

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Altronix

SKU: ALTV2416CBI220

Altronix ALTV2416CBI220 16-Output PTC CCTV Power Supply

16-output 220VAC CCTV supply with isolated PTC protection per channel
- 16 individually isolated outputs with PTC overload protection on each
- 220VAC input for European and Asian installations, 24VDC regulated output
- Wall mount or cabinet form factor fits tight spaces in control rooms
$904.24 $585.99 Save $318.25

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Altronix

SKU: ALTV2416ULCBI

Altronix ALTV2416ULCBI 16-Output 24VAC Isolated Power Supply

16-output 24VAC supply with individual PTC protection for CCTV
- 16 isolated Class 2 outputs, each with self-resetting PTC overcurrent
- 25A total capacity at 24VAC from 115VAC input for multi-camera loads
- BC300 steel wall-mount enclosure with independent output supervision
$843.12 $543.99 Save $299.13

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Altronix

SKU: ALTV2416ULCBI3

Altronix ALTV2416ULCBI3 16-Output PTC Power Supply

16-output PTC power supply with individual channel isolation
- 16 electronically isolated outputs prevent cascade failures across circuits
- PTC protection on each channel limits current during faults automatically
- Compact 17.5" form factor mounts in cabinets for access control expansion
$843.12 $543.99 Save $299.13

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Altronix

SKU: ALTV2416ULCBX

Altronix ALTV2416ULCBX 16-Output Class 2 CCTV Power Supply

16-output 24/28VAC Class 2 power supply for distributed CCTV systems
- 16 individually PTC-protected outputs at 7A each for cameras and accessories
- Configurable 24VAC or 28VAC output to support mixed-voltage camera installations
- 115VAC input with compact BC300 metal chassis for rack or cabinet mounting
$414.85 $241.99 Save $172.86

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Altronix

SKU: ALTV2416ULI

Altronix ALTV2416ULI 24VAC 25A 16-Output Isolated Power Supply

16-output 24VAC isolated supply for multi-camera CCTV systems
- 16 isolated circuits at 25A capacity eliminate ground-loop noise
- 115VAC to 24VAC conversion in wall-mount BC300 enclosure
- UL-listed design for regulated security infrastructure deployments
$843.12 $543.99 Save $299.13

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Altronix

SKU: ALTV2416ULI3

Altronix ALTV2416ULI3 16-Output Isolated Power Supply

16-output isolated power supply for CCTV systems, wall-mount
- 16 isolated outputs eliminate ground loop noise in multi-camera setups
- UL-listed AC input design for commercial and residential security work
- Compact wall-mount form factor fits tight equipment closets and racks
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Altronix

SKU: ALTV2416ULX

Altronix ALTV2416ULX 16-Output 24/28VAC Power Supply

16-output 24/28VAC wall-mount supply for access control systems
- 16 individually fused outputs protect each circuit from shorts or overloads
- Selectable 24/28VAC output matches native voltage of readers and locks
- 7A maximum current at 115VAC input powers multiple readers simultaneously
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$414.85 $241.99 Save $172.86

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Altronix

SKU: ALTV2416ULX3

Altronix ALTV2416ULX3 16-Output 24VAC Power Supply

16-output 24VAC wall-mount supply for distributed security systems
- 16 independent 24VAC channels for multi-camera and access control setups
- Wall-mount design fits space-constrained CCTV and security installations
- UL, CUL, and CE listed for North American and European deployments
$441.79 $258.99 Save $182.80

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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

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