Power & UPS
Sub categories
Power Supplies
1126 items
PoE Injectors & Midspans
587 items
Power Delivery & Supplies
3849 items
Surge Protectors
128 items
UPS & Power Management
1984 items
DC Power Connectors & Lugs
262 items
Showing Results for Power & UPS
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Altronix
SKU: EFLOW3NA4V
Altronix EFLOW3N W/ACM4 220V - EFLOW3NA4V
In stock · Ships same business day$471.46 $318.99 Save $152.47 -
Altronix
SKU: EFLOW3N4
Altronix EFLOW3N4 Dual-Voltage 4-Output Power Supply
Dual-voltage 4-output power supply with battery backup and fire alarm disconnect
- Selectable 12 or 24VDC output across 4 independently fused circuits at 2A max
- Integrated battery charger with AC fail and low-battery supervision
- Fire alarm disconnect and UL listed for access control and alarm systems
$425.49 $233.99 Save $191.50The item has been added -
Altronix
SKU: EFLOW3N4D
Altronix EFLOW3N4D 4-Output 12/24VDC Power Supply/Charger
4-output 12/24VDC supply with battery backup and AC fail monitoring
- Four independently supervised outputs at 2A each with Class 2 PTC protection
- Selectable 12VDC or 24VDC output to match device voltage requirements
- Integrated battery charger with AC fail detection and low battery supervision
$425.49 $233.99 Save $191.50The item has been added -
Altronix
SKU: EFLOW3NB
Altronix EFLOW3NB Single-Output 12/24VDC 2A Power Supply with Battery Backup
12/24VDC 2A supply with automatic battery backup for access control
- Selectable 12/24VDC output eliminates need for multiple SKUs
- Integrated battery backup with automatic switchover on AC loss
- AC fail, low battery, and battery presence supervision built-in
$289.88 $288.99 Save $0.89The item has been added -
Altronix
SKU: EFLOW3NV
Altronix EFLOW3NV TEMP UNAVAIL Recommended (AL400X220)
Dual 12/24VDC supply with battery backup and fire alarm integration
- 2A output from single unit with integrated charger and battery supervision
- AC failure monitoring and low battery alerts for uninterrupted operation
- UL Listed in compact BC300 enclosure, 120VAC 60Hz input
$393.56 $216.99 Save $176.57The item has been added -
Altronix
SKU: EFLOW3NX
Altronix EFLOW3NX Two (2) Output Power Supply/Charger
Compact 12/24VDC power supply with 2A output and battery backup
- Selectable 12/24VDC output with 2A maximum current for access control
- Integrated battery backup with automatic switchover and AC Fail monitoring
- Fire alarm disconnect and Low Battery supervision for safety compliance
$410.69 $222.99 Save $187.70The item has been added -
Altronix
SKU: EFLOW3NX4
Altronix EFLOW3NX4 4-Output 12/24VDC Power Supply Charger
Compact 12/24VDC 4-output supply with integrated battery charger for security systems
- Four independently fused 12/24VDC outputs isolate faults and prevent cascading failures.
- Integrated battery charger with AC fail and low-battery supervision ensures code-compliant backup.
- Built-in FAI disconnect relay and UL listing satisfy fire alarm disconnection requirements.
$442.61 $242.99 Save $199.62The item has been added -
Altronix
SKU: EFLOW3NX4D
Altronix EFLOW3NX4D Power Supply/Charger w/Fire Alarm Discon
UL Listed 12/24VDC power supply with integrated fire alarm disconnect
- Four PTC-protected outputs with selectable voltage for security systems
- Battery backup with AC Fail supervision for continuous operation during outages
- Integrated emergency disconnect meets fire alarm integration requirements
$442.61 $239.99 Save $202.62The item has been added -
Altronix
SKU: EFLOW4N
Altronix EFLOW4N 24VDC 4A Power Supply with Battery Backup & Fire Alarm Disconnect
24VDC 4A regulated supply with integrated battery backup & fire alarm disconnect
- Selectable 12/24VDC output at 4A handles multiple devices in one compact unit
- Battery backup with AC fail, low battery, and presence supervision built in
- FAI-compliant fire alarm disconnect in BC300 DIN rail or surface mount enclosure
$413.56 $227.99 Save $185.57The item has been added -
Altronix
SKU: EFLOW4N8
Altronix EFLOW4N8 12/24VDC 4A 8-Output Power Supply
12/24VDC 4A supply with 8 fused outputs and battery backup
- Selectable 12 or 24VDC output with 4A total capacity for mixed loads
- Eight individually fused circuits isolate device faults and enable independent control
- Integrated battery charger with AC fail, low battery, and fire alarm supervision
$451.16 $247.99 Save $203.17The item has been added -
Altronix
SKU: EFLOW4N8D
Altronix EFLOW4N8D 8-Output Power Supply Charger
8-output 12/24VDC charger with battery backup and fire alarm integration
- Eight independently protected outputs at 4A each, selectable 12VDC or 24VDC
- Integrated sealed lead-acid battery charger for backup during AC loss
- FAI-compliant disconnect and AC Fail/Low Battery/Battery Presence supervision
$451.16 $247.99 Save $203.17The item has been added -
Altronix
SKU: EFLOW4N8V
Altronix EFLOW4N8V 12/24VDC 4A 8-Output Power Supply
Dual-voltage 8-output power supply with battery backup for security systems
- 12/24VDC selectable with 4A total capacity across 8 individually fused outputs
- Integrated battery charger with AC fail and low battery supervision
- Fire alarm disconnect isolation for code-compliant emergency load control
$451.16 $247.99 Save $203.17The item has been added -
Altronix
SKU: EFLOW4NA8
Altronix EFLOW4NA8 8-Output Access Power Controller
8-output relay controller with integrated 12/24VDC supply and battery charger
- 8 fused Class 2 relay outputs at 4A per channel for lock and strike control
- Dual-voltage factory config (12VDC or 24VDC) matches existing door infrastructure
- 115VAC input with built-in battery charger eliminates separate power modules
$620.32 $340.99 Save $279.33The item has been added -
Altronix
SKU: EFLOW4NA8D
Altronix EFLOW4NA8D Access Power Controller w/ Power Supply
8-relay access power controller with selectable 12/24VDC and battery backup
- 8 PTC-protected relay outputs for independent circuit control and load management
- Selectable 12/24VDC output at 6A rated for multi-door access systems
- Integrated battery charger for emergency backup power on field devices
$620.32 $340.99 Save $279.33The item has been added -
Altronix
SKU: EFLOW4NB
Altronix EFLOW4NB 12/24VDC 4A Battery-Backed Power Supply
12/24VDC 4A supply with integrated battery backup and fire disconnect
- Selectable 12 or 24V output via DIP switch—one SKU fits both voltages
- 4A continuous output with automatic AC-loss switchover to battery power
- Fire alarm disconnect isolates battery on signal; AC Fail and Low Battery supervision
$335.13 $183.99 Save $151.14The item has been added -
Altronix
SKU: EFLOW4NA8DV
Altronix EFLOW4NX PWR SPLY W/ACM8CB - EFLOW4NA8DV
In stock · Ships same business day$561.26 $379.99 Save $181.27
Power is the foundation of every surveillance, access-control, and network system. Centralized, supervised, battery-backed power keeps cameras recording, doors locking, and switches forwarding during outages and surge events. Choose components sized for your load — recorder UPS, camera supplies, PoE midspans, surge protection — and your system runs through the events that take down unmanaged installations.
Plan a Reliable Power System
- Sized power supplies — 12V or 24V DC sized to total device load plus 25% headroom for spin-up, aging, and expansion.
- UPS & battery backup — runtime sized to your outage profile, with managed shutdown for NVRs and access controllers.
- PoE budgets — 802.3af, at, and bt midspans/switches sized for total port load, not just per-port maximum.
- Surge protection & grounding — at the building entrance and at outdoor camera locations exposed to lightning.
- Distribution & redundancy — rack PDUs, DIN-rail supplies for industrial cabinets, and dual-source feeds for life-safety loads.
Shop by Category
UPS & Battery Backup
Rack-mount and tower UPS units sized to NVR, switch, and controller load — line-interactive and double-conversion topologies for clean recovery.
Power Supplies
12V DC and 24V DC supplies for camera and access-control panels — sized by current draw with 25% headroom for surge and expansion.
PoE Injectors & Midspans
802.3af, 802.3at, and 802.3bt midspans for legacy switches — 15W to 90W per port for PTZ cameras, displays, and high-power readers.
Rack Power Supplies
19-inch chassis with distributed outputs — PTC fused, supervised, and battery-backup ready for multi-camera or access-control deployments.
DIN Rail Power Supplies
Industrial DIN-rail supplies for control cabinets — wide-range AC input, redundant pairing, and temperature-rated for harsh environments.
Power Delivery & Supplies
Centralized distribution panels, surge protection, and grounding products for organized, code-compliant low-voltage installations.
Surge Protectors
Inline Ethernet, coax, and AC surge suppressors for outdoor cameras, antenna runs, and equipment-room protection — critical for rooftop and pole-mount installations.
Featured Brands
Altronix
Access-control and CCTV power — rack and wall enclosures, battery backup, and FACP-compatible supervised power.
Lifesafety Power
Networked supervised power for access control and fire — Mercury, LenelS2, and Genetec integrations.
NETGEAR
PoE+ and PoE++ switches and midspans with high port-count power budgets for camera and Wi-Fi deployments.
Ubiquiti
UniFi PoE switches with managed budget per port — strong fit for IT-managed surveillance VLANs.
Cradlepoint
Cellular failover routers with PoE and dual-SIM for branch-site continuity when WAN drops.
Transition Networks
Industrial PoE++ media converters and ruggedized switches for outdoor, transportation, and utility deployments.
Buyer FAQ
How do I size a UPS for my surveillance system?
Add up the wattage of every device on the UPS — recorder, switch, monitor, controller, and PoE budget for the cameras — then add 25% headroom for spin-up and aging. Multiply by your target runtime (typically 15–30 minutes for managed shutdown, 4–8 hours for site continuity) to pick a VA rating. Our team can review your bill of materials and recommend a model — submit details via the contact form.
What's the difference between PoE, PoE+, and PoE++?
PoE (802.3af) delivers up to 15.4W per port — fine for fixed-lens cameras and basic readers. PoE+ (802.3at) lifts that to 30W — covers PTZ heaters, IR illuminators, and most multi-sensor cameras. PoE++ (802.3bt Type 3/4) runs up to 60W or 90W per port for high-power thermal cameras, displays, and access-control controllers. Pick a switch or midspan whose total budget covers the sum of per-port loads, not just the per-port maximum.
Why use a midspan instead of a PoE switch?
When you have an existing non-PoE switch you want to keep, a midspan (PoE injector) adds power without replacing the switch. Midspans also help when you need to upgrade a few high-power ports (60W or 90W) without buying an entire 802.3bt switch.
Do I need surge protection on outdoor cameras?
Yes — outdoor Ethernet runs collect induced energy during nearby strikes even when the camera isn't directly hit. Inline PoE surge protectors at the camera (or at the building entry) clamp the spike and protect the recorder/switch. Critical for any pole-mount or rooftop deployment.
How do I plan power for an access-control system?
Each door typically needs 1–2A at 12V DC (controller + reader + lock + REX). Multiply by door count, then size a supervised power supply (Altronix, Lifesafety) with battery backup matched to UL 294 / NFPA 72 hold-up time for your jurisdiction. Our Senior Specialist team has working integrators who size these systems daily.
Need help sizing your system?
Our team includes working integrators who size camera-system power, PoE budgets, and access-control supplies daily. Send your bill of materials, recorder count, and target runtime — we'll recommend the right UPS, supply, and midspans before you order.
Quick links to guides
Datacenter UPS Sizing Guide
Size a datacenter UPS in kW vs kVA, profile load, pick N+1 or 2N redundancy, and plan for AI rack densities of 40-100+ kW. Vert...
UPS Topology: Online vs Line-Interactive vs Offline
Compare online double-conversion vs line-interactive vs standby UPS topology. Selection matrix by use case, true cost trade-off...
Rack PDU Buyer's Guide
Basic, metered, monitored, switched PDU - and when each one earns its place. Plug references, phase config, dual-cord, brand co...
PoE Power Budget Planning
Size your PoE switch for surveillance and access control. PoE class reference, camera-count-by-wattage table, worked deployment...
Battery Backup Runtime Calculator
Free UPS runtime calculator. Enter load, battery voltage and Ah, chemistry (VRLA / lithium), depth of discharge, temperature. G...