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: ALTV248600ULCB

Altronix ALTV248600ULCB 8-Output 24/28VAC Power Supply

8-output 24/28VAC supply for distributed security systems, 25A total
- Eight individually protected outputs isolate faults across camera and sensor loads
- Dual 24/28VAC output voltage supports mixed legacy and current equipment
- 115VAC input with wall-mount BC300 enclosure fits compact installation spaces
$675.97 $395.99 Save $279.98

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Altronix

SKU: ALTV248600ULCB3

Altronix ALTV248600ULCB3 8-Output 24/28VAC Power Supply

8-output 24/28VAC wall-mount supply for distributed security power
- Eight individually PTC-protected outputs prevent device faults from cascading
- 24/28VAC regulated output supports CCTV, access control, and intercom systems
- UL Listed and CE marked; compact wall-mount form factor for control rooms
$676.52 $395.99 Save $280.53

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Altronix

SKU: ALTV248CB

Altronix ALTV248CB 8-Output 24/28VAC CCTV Power Supply

8-output 24/28VAC wall-mount supply for multi-camera CCTV systems
- Eight independent PTC-protected outputs prevent short circuits on individual camera runs
- 24/28VAC for standard CCTV cameras, PTZ motors, and access control devices
- Wall-mount design fits control rooms, closets, or equipment racks with minimal space
$211.84 $123.99 Save $87.85

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Altronix

SKU: ALTV248MI220

Altronix ALTV248MI220 24VAC 8-Output CCTV Power Supply

24VAC 8-output CCTV power supply for 220VAC European installations
- Eight independently fused outputs with 12.5A total capacity for multi-camera systems
- 24VAC regulated output standard for analog cameras and access control equipment
- BC100M metal enclosure with wall-mount and rack-ready deployment options
$541.94 $317.99 Save $223.95

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Altronix

SKU: ALTV248UL

Altronix ALTV248UL 8-Output 24VAC Power Supply

Eight independent 24VAC outputs, 3.5A per circuit, wall-mount
- 8 fused circuits isolate loads—one short doesn't affect others
- 24/28VAC regulated output handles access control, camera motors, intercoms
- 115VAC input, UL Listed and CE certified for North America and Europe
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$233.90 $136.99 Save $96.91

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Altronix

SKU: ALTV248UL3

Altronix ALTV248UL3 24VAC 3.5A 8-Fuse Power Supply

24VAC 3.5A power supply with 8 independent fused circuits
- Eight separately fused outputs protect individual devices on shared power
- 24VAC 3.5A capacity covers multi-device security and access control setups
- UL Listed and CE approved for professional installation requirements
$233.90 $135.99 Save $97.91

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Altronix

SKU: ALTV248ULCB

Altronix ALTV248ULCB 8-Channel 24VAC CCTV Power Supply

8-channel 24VAC wall-mount supply for distributed CCTV systems
- 8 independent 24/28VAC outputs at 3.5A per channel (28A total)
- UL/CUL Class 2 certified for security cameras and access control
- Individual channel load isolation protects each circuit independently
$233.90 $135.99 Save $97.91

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Altronix

SKU: ALTV248ULCB3

Altronix ALTV248ULCB3 8 Output CCTV Power Supply- with install

8-output regulated CCTV power supply with professional installation
- 8 independent circuits for multi-camera surveillance systems
- UL Listed and CE approved for North American and European use
- Centralized architecture reduces wiring complexity in camera deployments
$233.90 $137.99 Save $95.91

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Altronix

SKU: ALTV248ULCBHI

Altronix ALTV248ULCBHI 8 Output Isolated CCTV Power Supply

8-output 24VAC isolated power supply for distributed CCTV systems
- Eight isolated 24VAC circuits reduce ground loops and interference between camera feeds
- 12.5A total capacity supports medium to large multi-camera surveillance deployments
- 115VAC input with regulated output for consistent power to cameras and accessories
$614.31 $359.99 Save $254.32

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Altronix

SKU: ALTV248ULCBMI

Altronix ALTV248ULCBMI 8-Output 24VAC Power Supply

8-output 24VAC wall-mount supply, 12.5A per channel, AC isolated
- 8 independently fused 24VAC outputs prevent cross-circuit faults
- 12.5A maximum current per channel for multi-device power distribution
- 115VAC input, AC isolated design eliminates ground loops in CCTV systems
$527.67 $309.99 Save $217.68

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Altronix

SKU: ALTV248ULHI

Altronix ALTV248ULHI 24VAC 12.5A 8-Output Power Supply

8-output 24VAC supply with 12.5A capacity for distributed security power
- 8 isolated 24VAC outputs from single 115VAC input for multi-device setups
- 12.5A total current capacity supports multiple CCTV cameras and access control
- Wall-mount design with UL Listed and CE approval for security installations
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Altronix

SKU: ALTV248ULHI3

Altronix ALTV248ULHI3 24VAC 8-Output Power Supply

24VAC 8-output power supply with individual fused protection
- 14A capacity across 8 independent outputs, each with dedicated fuse
- UL Listed and CE approved for security and access control systems
- Single-output failure won't interrupt power to remaining 7 circuits
$614.31 $359.99 Save $254.32

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Altronix

SKU: ALTV248ULMI

Altronix ALTV248ULMI UL Listed CCTV AC Isolated Wall Mount 8

8-channel 24VAC isolated wall mount for distributed CCTV power
- Eight isolated 24VAC circuits with 12.5A total capacity for multi-camera setups
- AC isolation topology eliminates ground-loop hum in surveillance installations
- UL Listed and CE approved, 115VAC input, wall-mount form factor
$527.67 $309.99 Save $217.68

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Altronix

SKU: ALTV248ULMI3

Altronix ALTV248ULMI3 8-Output 24VAC Power Supply

Eight isolated 24VAC outputs for multi-camera surveillance systems
- 8 independent AC isolated outputs reduce noise and interference
- Wall-mount design fits compact installations with space constraints
- UL Listed and CE marked for North American and European deployments
$527.67 $309.99 Save $217.68

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Altronix

SKU: ALTV615DC1016

Altronix ALTV615DC1016 16-Output CCTV Power Supply

16-output DC power supply with independent fuses for multi-camera CCTV
- 16 independently fused outputs isolate camera failures to single channels
- Adjustable 6–15VDC output and 11A capacity @ 12VDC for mixed loads
- 115VAC input, BC300 metal enclosure, wall-mount ready, UL Listed
$529.59 $307.99 Save $221.60

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Altronix

SKU: ALTV615DC101622

Altronix ALTV615DC101622 16-Output 12VDC Wall Mount

16-channel 12VDC/6VDC wall-mount power supply for distributed security
- 16 independently fused outputs at selectable 12VDC or 6VDC voltage
- Up to 11A capacity at 12VDC or 10A at 6VDC for multi-camera systems
- 230VAC input, wall-mount form factor, UL Listed
$500.43 $323.99 Save $176.44

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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

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