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
Pelco

SKU: ECPS-48VDC-5A

Pelco ECPS-48VDC-5A 4-Channel PoE Injector 48V

4-channel 48V PoE injector for multi-camera Pelco Endura systems
- Distributes 48 VDC at 5A total across four ports, eliminating single injectors
- Consolidates power at head end for simplified network infrastructure
- Rack-mount design; 100–240 VAC input; NDAA Section 889 compliant
Special Order · Ships in 2-3 weeks

$445.20 $327.99 Save $117.21

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: FM1010

Pelco FM1010 EMC Filter Marine Certified

EMC filter for marine-certified camera power with DNV/Lloyd's/ABS compliance
- Suppresses conducted electromagnetic interference on power feed lines
- DNV, Lloyd's, and ABS marine certification for regulated deployments
- SOLAS and NDAA Section 889 compliant for government/commercial vessels
Special Order · Ships in 2-3 weeks

$50.70 $37.99 Save $12.71

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: IRHPS120

Pelco IRHPS120 120Vac Power Supply for IR Camera Housing

120Vac to 24Vac power supply for IR camera housings, North American only
- 30W regulated 24Vac output powers heater, blower, illuminator, and camera
- 120Vac 50/60Hz input with NDAA Section 889 compliance for regulated deployments
- Indoor installation near camera location with 1-year manufacturer coverage
Special Order · Ships in 2-3 weeks

$131.13 $96.99 Save $34.14

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: IRHPS230

Pelco IRHPS230 Power Supply 230Vac IR Housing

230 Vac power supply for Pelco IR housings in Europe and Asia-Pacific
- Converts 230 Vac 50/60 Hz to 24 Vac at 30 W for simultaneous IR, heat, blower
- Single integrated supply for Pelco IR camera housings with IP66 rated enclosure
- Sized for commercial surveillance in regions outside North America with 230 Vac standard
Special Order · Ships in 2-3 weeks

$131.13 $96.99 Save $34.14

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEGBPS1B

Pelco OHEGBPS1B OHEG Housing Power Supply

Universal 100–240V power supply for Pelco OHEG outdoor housings
- 100–240 Vac input eliminates need for voltage converters in mixed installations
- Weatherproof outdoor-rated enclosure mounts directly at housing location
- NDAA Section 889 compliant for government and regulated deployments
Special Order · Ships in 2-3 weeks

$107.79 $79.99 Save $27.80

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEGBPS2B

Pelco OHEGBPS2B 230Vac Housing Power Supply

230Vac regulated power supply for Pelco OHEG outdoor housings
- 230 Vac input to 24 Vac output for heating, blower, and camera accessories
- Weatherproof enclosure rated for direct outdoor installation at housing location
- Eliminates need for remote electrical runs on 230 Vac infrastructure sites
Special Order · Ships in 2-3 weeks

$107.79 $79.99 Save $27.80

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEP90INJO

Pelco OHEP90INJO Outdoor Hi-PoE 90W Injector

90W Hi-PoE injector for outdoor PTZ and heated camera housings
- 90W IEEE 802.3bt Hi-PoE output from AC mains for extended cable runs
- IP66 weatherproof housing rated for outdoor field mounting
- ONVIF compatible, NDAA Section 889 compliant for regulated deployments
Special Order · Ships in 2-3 weeks

$1,223.28 $899.99 Save $323.29

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEPOWINJ

Pelco OHEPOWINJ Hi-PoE Injector for OHE Housing

Hi-PoE injector for Pelco OHE outdoor housings with heating/cooling
- Exceeds standard 30W PoE+ to support cameras with heaters, blowers, IR
- Single Ethernet cable carries both power and data to outdoor housing
- Indoor IT closet mount; NDAA Section 889 compliant for government use
Special Order · Ships in 2-3 weeks

$131.13 $96.99 Save $34.14

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEPS01B

Pelco OHEPS01B OHE Power Supply 12Vdc

12Vdc power supply for Pelco OHE outdoor housings, 100–240V input
- Universal AC input (100–240 Vac, 50/60 Hz) with no voltage selector needed
- 12Vdc output for Pelco outdoor housing accessories and surveillance deployments
- NDAA Section 889 compliant for government and enterprise procurement
Special Order · Ships in 2-3 weeks

$64.97 $47.99 Save $16.98

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEPS02B

Pelco OHEPS02B 230Vac to 24Vac Power Supply

230Vac to 24Vac converter for European outdoor housing accessories
- Regulated 24Vac output powers heaters, blowers, and wiper motors simultaneously
- 20% capacity headroom built in for safe operation without voltage drop
- NDAA Section 889 compliant for government and regulated installations
Special Order · Ships in 2-3 weeks

$57.10 $41.99 Save $15.11

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEPS19B

Pelco OHEPS19B 12Vdc Power Supply

12Vdc regulated supply for Pelco OHE camera housings, 100–240V input
- Universal 100–240 Vac input, 50/60 Hz — no selector switch needed
- Stable 12 Vdc output designed for OHE-series housing compatibility
- Compact design rated for dry, ventilated indoor and protected locations
Special Order · Ships in 2-3 weeks

$49.36 $36.99 Save $12.37

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEPS20

Pelco OHEPS20 Housing Power Supply 230Vac to 24Vac

230Vac to 24Vac converter for Pelco outdoor camera housings
- Powers heater, blower, and wiper motor systems simultaneously
- 20% operational headroom matched to integrated housing accessories
- Indoor/enclosed installation in dry, ventilated location required
Special Order · Ships in 2-3 weeks

$35.48 $26.99 Save $8.49

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHEPS25

Pelco OHEPS25 230Vac to 24Vac Power Supply

230Vac to 24Vac power supply for European outdoor housing accessories
- 400 mA output rated for single heater or wiper motor loads
- Converts European 230 Vac input to regulated 24 Vac output
- NDAA Section 889 compliant for regulated installations
Special Order · Ships in 2-3 weeks

$50.16 $36.99 Save $13.17

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHOVPS1B

Pelco OHOVPS1B Housing Power Supply 12Vdc

Universal 12Vdc supply for Pelco OHO camera housings, 100–240V input
- 100–240 Vac input with no selector switch for global deployments
- 12 Vdc output purpose-built for Pelco OHO-series housings
- NDAA Section 889 compliant for government and critical infrastructure
Special Order · Ships in 2-3 weeks

$44.82 $32.99 Save $11.83

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: OHOVPS2B

Pelco OHOVPS2B Power Supply 230V to 24V AC

230V to 24V AC converter for Pelco OHO surveillance housings
- Converts European 230 Vac mains to regulated 24 Vac output
- Compact mount-ready design fits OHO-series camera housings
- NDAA Section 889 compliant for government surveillance projects
Special Order · Ships in 2-3 weeks

$35.48 $26.99 Save $8.49

Add to Cart
The item has been added
Compare

Out of stock
Pelco

SKU: ONXPS1B

Pelco ONXPS1B Universal Power Supply 12Vdc

12Vdc regulated supply for Pelco ONX cameras, 100–240Vac worldwide input
- Auto-sensing 100–240 Vac input handles North American and European mains
- 12 Vdc regulated output supports ONX-series camera systems reliably
- NDAA Section 889 compliant for government and critical infrastructure use
Special Order · Ships in 2-3 weeks

$54.43 $40.99 Save $13.44

Add to Cart
The item has been added

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

Pelco ECPS-48VDC-5A 4-Channel PoE Injector 48V

Pelco FM1010 EMC Filter Marine Certified

Pelco IRHPS120 120Vac Power Supply for IR Camera Housing

Pelco IRHPS230 Power Supply 230Vac IR Housing

Pelco OHEGBPS1B OHEG Housing Power Supply

Pelco OHEGBPS2B 230Vac Housing Power Supply

Pelco OHEP90INJO Outdoor Hi-PoE 90W Injector

Pelco OHEPOWINJ Hi-PoE Injector for OHE Housing

Pelco OHEPS01B OHE Power Supply 12Vdc

Pelco OHEPS02B 230Vac to 24Vac Power Supply

Pelco OHEPS19B 12Vdc Power Supply

Pelco OHEPS20 Housing Power Supply 230Vac to 24Vac

Pelco OHEPS25 230Vac to 24Vac Power Supply

Pelco OHOVPS1B Housing Power Supply 12Vdc

Pelco OHOVPS2B Power Supply 230V to 24V AC

Pelco ONXPS1B Universal Power Supply 12Vdc

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