Network Switches, PoE Injectors & Surveillance Infrastructure

Plan Your Deployment

Total PoE power budget and port density requirements
Switch throughput and uplink capacity planning
Redundancy and failover design considerations
Distance limitations and fiber conversion needs
Power conditioning and voltage compatibility

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Comnet

SKU: SFP-26A

Comnet SFP-26A SFP Transceiver Module – 10G Single Mode

10G single-mode SFP transceiver for long-distance fiber links
- 10 Gigabit per second over single-mode fiber for extended reach
- Industrial temperature range rated for outdoor and harsh deployments
- SNMP managed module with hot-swap SFP form factor
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Comnet

SKU: SFP-26B

ComNet SFP-26B SFP Transceiver Module

10G single-mode SFP for long-distance fiber runs with galvanic isolation
- 10 Gigabit speed over single-mode fiber for extended transmission range
- Hot-swappable SFP module—plug-and-play, no configuration needed
- Galvanic fiber isolation eliminates ground loops and surge interference
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Comnet

SKU: SFP-3

Comnet SFP-3 Gigabit Ethernet Media Converter with PoE

Gigabit copper-to-fiber converter with 30W PoE for industrial edge
- 4 Gigabit copper ports + 2 SFP slots with DIP-selectable 100/1000 modes
- 30W PoE budget powers multiple field devices across copper ports
- Single-mode fiber support with intelligent speed negotiation, USA-made
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Comnet

SKU: SFP-36A

Comnet SFP-36A SFP Transceiver Module

10G single-mode SFP transceiver for industrial fiber backbone networks
- 10 Gigabit Ethernet over single-mode fiber for long-distance deployments
- Industrial-grade operating temperature for outdoor and non-climate-controlled sites
- Hot-swappable SFP form factor integrates with managed switches without downtime
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Comnet

SKU: SFP-36B

ComNet SFP-36B SFP Transceiver Module 10G Single Mode

10G single-mode SFP transceiver for extended-distance fiber links
- 10 Gigabit speed over single-mode fiber for long-reach deployments
- Unmanaged, hot-swappable SFP form factor—plug directly into ComNet switches
- Compatible with ComNet CW Series switches featuring SFP ports
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Comnet

SKU: SFP-46

Comnet SFP-46 10G Single Mode SFP Transceiver Module

10G single-mode SFP for long-distance fiber links, plug-and-play
- 10 Gigabit throughput over single-mode fiber to tens of kilometers
- Unmanaged, hot-pluggable module fits any standard SFP cage slot
- Passive design with no configuration needed for point-to-point connectivity
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Comnet

SKU: SFP-48A

Comnet SFP-48A Single Mode SFP Transceiver Module

10G single-mode SFP transceiver with 550m range and LC connectors
- 10 gigabit speed over single-mode fiber for long-distance backbone links
- 550-meter maximum range supports distributed deployments across large sites
- Hot-swappable LC duplex module fits standard SFP slots without downtime
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Comnet

SKU: SFP-48B

ComNet SFP-48B Single Mode SFP Transceiver Module

10G single-mode SFP for long-range fiber runs up to 550 meters
- 10 Gigabit per second speed with single-mode fiber for low-loss transmission
- LC duplex connector, hot-swappable SFP form factor fits standard network switch slots
- Reaches 550 meters on compatible fiber infrastructure without management config
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Comnet

SKU: SFP-5

Comnet SFP-5 5-Port Managed SFP Transceiver Module

5-port 10G managed SFP module for industrial single-mode fiber
- Five SFP ports deliver 10 Gigabit Ethernet per port on single-mode fiber
- Managed switching with VLAN support for traffic control and segmentation
- DIN rail mount and industrial temperature operation for field deployment
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Comnet

SKU: SFP-6

Comnet SFP-6 Industrial Ethernet Media Converter

Gigabit copper-to-fiber converter with 60W PoE++ for substations
- 1x 10/100/1000BASE-TX copper + 1x single-mode fiber (100/1000BASE-FX)
- 60W PoE++ output from dual 48VDC inputs with automatic failover
- IEC 61850-3, IEEE 1613 Class 2, EN50155, NEMA TS-1/TS-2 rated
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Comnet

SKU: SFP-7

Comnet SFP-7 10G Single Mode SFP Transceiver Module

10G single-mode SFP transceiver for industrial fiber networks
- 10 Gigabit speed over single-mode fiber with managed monitoring
- Industrial temperature rating for harsh environment deployment
- Hot-swappable SFP module with DIN rail mounting support
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Comnet

SKU: SFP-8

Comnet SFP-8 Industrial SFP Transceiver Module

Single-mode SFP transceiver for industrial gigabit fiber runs
- 1000 Mbps gigabit speed over single-mode fiber for long distances
- Hot-swappable SFP module installs in any standard SFP slot
- Rated for industrial temperature range in harsh outdoor environments
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Comnet

SKU: SFP-9

Comnet SFP-9 10G Single Mode SFP Transceiver Module

10G single mode SFP+ for enterprise fiber uplinks and long-distance links
- 10 Gigabit speed over single mode fiber for extended-range backbone connectivity
- Hot-swappable SFP+ form factor installs into compatible enterprise switch ports
- Unmanaged operation—no configuration needed, plug-and-play deployment
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Comnet

SKU: SFP-BX-D

Comnet SFP-BX-D 10G Single Mode SFP Transceiver

10G single-mode SFP for long-distance fiber backbone runs
- 10 Gigabit Ethernet over single-mode fiber with LC connector
- Hot-swappable SFP module fits standard switch ports
- Operates -40°C to +75°C for surveillance and network infrastructure
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Comnet

SKU: SFP-LH

Comnet SFP-LH 10G Single Mode SFP Transceiver

10G single mode SFP transceiver for long-haul fiber runs
- 10 Gigabit performance over single mode fiber with extended reach
- Hot-pluggable SFP form factor works with standard equipped switches
- Built-in digital diagnostic monitoring for real-time optical signal health
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Comnet

SKU: SFP-LX

Comnet SFP-LX SFP Transceiver Module

1 Gbps single-mode SFP for long-distance industrial fiber networks
- 1 Gbps Gigabit Ethernet over single-mode fiber at industrial temps
- Hot-swappable SFP module fits Comnet and standard SFP switch slots
- Extended transmission distance reduces cabling costs in distributed setups
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$395.00 $253.99 Save $141.01

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What to Look For When Buying

The six decisions that matter most before you spec.

PoE Power Budget Math

A 24-port PoE+ switch with 370W total budget can't actually run 24 outdoor cameras at peak 25W each. Simultaneous peak — not nameplate — is the limit. Always verify per-port PoE allocation and total budget against actual camera load. See PoE budget planning and why your PoE switch fails after 18 cameras.

328-Foot Ethernet Limit

Cat5e, Cat6, and Cat6A all top out at 100 meters (328ft) per TIA-568. Past that, you need a media converter to fiber, a PoE extender, or an intermediate switch. Common gotcha: in-wall patch + faceplate + drop + jumper all count against 328ft. Long runs to perimeter cameras frequently exceed the limit — plan for fiber or coax-PoE extension.

Managed vs Unmanaged Switches

Unmanaged switches work for small deployments but provide no VLAN segmentation, no QoS for video traffic, no monitoring, and no remote troubleshooting. Managed switches (Layer 2 or Layer 3) let you isolate cameras on a dedicated VLAN, prioritize video over office traffic, and diagnose link failures from a central SNMP platform. Spec managed for any deployment over 8 cameras.

UPS Sizing & Runtime

NVR + switches + cameras + access control have very different power profiles than office gear. Size UPS for actual wattage of all connected loads + 20% headroom, and calculate runtime with battery-life curves (runtime is non-linear — doubling load often cuts runtime 60%+). Surveillance UPS should provide 15-30 min to accommodate generator transfer or graceful shutdown.

Copper vs Fiber Uplinks

In-rack uplinks on 10G copper (Cat6A) work fine for short runs. Between-building and multi-floor uplinks should be fiber — single-mode for >300m, multimode for under. Fiber is also electrically isolated, which matters in lightning-prone environments. Axis, Hanwha, and Ubiquiti switches include SFP/SFP+ uplinks across most models.

Cooling & Airflow in Racks

Surveillance gear runs 24/7 — a closed rack at 90°F interior temperature will fail drives and switches faster than spec. Specify perforated doors, rack-mount fans, and leave 1U of airflow gap above/below heat-generating equipment. NVRs with internal fans need front-to-back airflow; network switches vary by vendor. Check thermal spec before sealing a wall-mount enclosure.

Technology Stack

The specs and acronyms that actually affect outdoor performance.

802.3af / at / bt PoE Standards

802.3af = 15.4W/port (entry cameras), 802.3at PoE+ = 25.5W/port (most outdoor cameras), 802.3bt PoE++ Type 3 = 60W, Type 4 = 90W (PTZ, heated, multi-sensor). Specify switch support for the highest standard your cameras need — future-proofing with PoE++ switches costs marginally more.

TIA-568 Cabling Standards

Cat5e rated to 1 Gbps at 100m. Cat6 rated to 10 Gbps at 55m, 1 Gbps at 100m. Cat6A rated to 10 Gbps at 100m with proper grounding. Use Cat6A for new surveillance cabling runs — marginal cost premium over Cat6, meaningful margin for long runs + high PoE.

SFP / SFP+ / QSFP+ Modules

Small Form-factor Pluggable optics for fiber uplinks. SFP = 1 Gbps, SFP+ = 10 Gbps, QSFP+ = 40 Gbps. Match module to switch vendor compatibility (some vendors lock to their own brand of optics). Multimode fiber with OM3/OM4 for ≤300m, single-mode for longer or future-proof runs.

VLAN Segmentation

Dedicated VLAN for surveillance isolates camera traffic from office network — improves security (camera-to-camera lateral movement blocked), performance (no contention with office traffic), and troubleshooting. Configure access-control and intercom VLANs separately. Managed switches required; unmanaged switches cannot segment.

Long-Reach PoE Extension

Ethernet-over-Coax (EoC) extends Ethernet + PoE to 1,500+ feet over existing RG59 coax — ideal for analog-to-IP retrofits. Ethernet-over-UTP extenders push runs to 4,000ft over CAT cable. NVT Phybridge CHARIoT, Altronix eBridge, and Veracity Highwire are the common product families. Rate-limited to 100 Mbps typically.

UPS Topology: Line-Interactive vs Double-Conversion

Line-interactive UPS switch to battery on power failure — sufficient for office gear. Double-conversion (online) UPS convert AC→DC→AC continuously, providing perfectly conditioned power — required for sensitive SCADA/security gear in dirty-power environments. Specify double-conversion for NVRs at critical sites.

Typical Deployment Scenarios

8-Camera Single-Site Retrofit

Existing network + 8 outdoor IP cameras. Add a 16-port managed PoE+ switch (Ubiquiti UniFi, Axis T85) on a dedicated VLAN. 1U rack UPS for the NVR + switch. 120-160 watts total PoE budget comfortably runs 8 outdoor cameras with heater + IR.

48-Camera Campus Upgrade

Four buildings, 48 cameras total, existing fiber backbone. Per-building 24-port PoE++ switch with SFP+ fiber uplink to core. Dedicated surveillance VLAN, QoS for video traffic, SNMP monitoring. 2-post relay rack in each IDF closet with dedicated surveillance UPS.

Perimeter Fence Line (1,200ft)

6 bullet cameras + 2 PTZs along perimeter fence, main NVR in building. Fiber media converter + outdoor-rated fiber to a PoE++ switch in a weatherproof enclosure at the fence line. Alternative: NVT Phybridge CHARIoT over existing coax for retrofit applications.

Multi-Floor Office Tower

Stacked IDFs on every floor, cameras + access control + intercom on dedicated VLANs. Cisco Catalyst or Ubiquiti UniFi Pro managed switches per floor with 10G fiber uplink to building core. Per-IDF 3U UPS. Integration with VMS and access control head-end at main BDF.

Frequently Asked Questions

How do I calculate PoE budget for a camera deployment?

Sum the peak wattage of every camera (not nameplate — check spec sheet for "PoE class" or "max consumption"). Add 15-20% headroom for inrush during cold-start. The result is your required simultaneous-peak PoE budget. A 24-port PoE+ switch advertised at 370W can only run about 18 outdoor cameras with heaters + IR — see PoE budget planning.

What's the maximum Ethernet cable run for an IP camera?

100 meters (328 feet) per TIA-568 — total distance from switch port to camera port. That includes in-rack patch cords, in-wall cabling, faceplate jack, and camera jumper. For longer runs, use fiber with a media converter or a long-reach PoE extender. Going past 328ft on copper causes intermittent packet loss that looks like camera problems.

Do I need managed or unmanaged PoE switches?

For more than 8 cameras or any mixed-use network (cameras sharing infrastructure with office traffic), specify managed. VLAN segmentation isolates camera traffic for security and performance; QoS ensures video gets bandwidth priority; SNMP monitoring surfaces failures before users call. Unmanaged switches are acceptable only for small standalone deployments.

What UPS runtime should I plan for an NVR + switch?

15-30 minutes of runtime at actual load is typical — enough to ride through brief outages or allow graceful shutdown before battery exhaustion. For sites with generator transfer, 5-10 minutes is sufficient. Size UPS wattage for actual connected load + 20%, and use the vendor's runtime-at-load curve (runtime is non-linear). Double-conversion UPS for sensitive or dirty-power sites.

How far can I extend PoE past 328 feet?

Ethernet-over-Coax extenders (NVT Phybridge CHARIoT, Altronix eBridge) push Ethernet + PoE to 1,500+ feet over existing RG59/RG6 coax — ideal for analog-to-IP retrofits. UTP-based extenders reach 2,000-4,000 feet on Cat cable at reduced bandwidth (typically 100 Mbps). For new runs over 328ft, fiber + PoE switch at the camera end is usually cleaner architecture.

Should I put cameras on a separate VLAN?

Yes — always. A dedicated camera VLAN isolates camera traffic from office network for security (blocks camera-to-camera lateral movement if one is compromised), performance (cameras don't contend with office bandwidth), and troubleshooting (camera traffic is cleanly separated for packet capture). Requires managed switches; takes 10 minutes to configure on Ubiquiti UniFi, Cisco Catalyst, or any enterprise switch.

Infrastructure

Plan Your Deployment

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Showing Results for Infrastructure

Comnet SFP-26A SFP Transceiver Module – 10G Single Mode

ComNet SFP-26B SFP Transceiver Module

Comnet SFP-3 Gigabit Ethernet Media Converter with PoE

Comnet SFP-36A SFP Transceiver Module

ComNet SFP-36B SFP Transceiver Module 10G Single Mode

Comnet SFP-46 10G Single Mode SFP Transceiver Module

Comnet SFP-48A Single Mode SFP Transceiver Module

ComNet SFP-48B Single Mode SFP Transceiver Module

Comnet SFP-5 5-Port Managed SFP Transceiver Module

Comnet SFP-6 Industrial Ethernet Media Converter

Comnet SFP-7 10G Single Mode SFP Transceiver Module

Comnet SFP-8 Industrial SFP Transceiver Module

Comnet SFP-9 10G Single Mode SFP Transceiver Module

Comnet SFP-BX-D 10G Single Mode SFP Transceiver

Comnet SFP-LH 10G Single Mode SFP Transceiver

Comnet SFP-LX SFP Transceiver Module

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