Altronix NETWAY4EBTB 4-Port Gigabit PoE Switch Board
The Altronix NETWAY4EBTB is a hardened PoE switch board engineered for security and access control integrators deploying high-density powered devices in cabinet-centric or distributed fiber-backbone architectures. This compact board delivers full gigabit switching with 240W of 802.3bt power delivery across four independent ports, each capable of sustaining 90W continuous draw. The integrated single-mode fiber SFP uplink eliminates EMI coupling and extends backbone runs far beyond copper limitations — ideal for campuses, multi-building complexes, and installations where electrical noise or distance isolation is a constraint.
Key Features
- Four Gigabit Ethernet Ports: 10/100/1000 Mbps auto-negotiation with automatic MDI/MDIX crossover; full-duplex switching for simultaneous independent streams.
- 802.3bt 4PPoE Power Delivery: 90W per port (240W aggregate) — sufficient for four high-draw access controllers, PTZ cameras, or industrial sensors simultaneously.
- Single-Mode Fiber SFP Uplink: 1G SFP slot for backbone connectivity; single-mode fiber extends reach to 10+ km and galvanically isolates from EMI hotspots in electrical panels.
- 48–56V DC Input: Direct integration with standard cabinet power supplies and redundant PSU farms; no AC-to-DC conversion loss on the board itself.
- Board Form Factor: 6.25" × 4.5" × 1.25" — mounts directly to cabinet rails, PDU frames, or custom enclosures without requiring external housing or rack space.
- LINQ Supervision: Compatible with Altronix LINQ ecosystem for centralized power monitoring, device status reporting, and remote management across multi-site deployments.
- Industrial Conformal Coating: Rated for non-climate-controlled environments (–30°C to 85°C storage range); designed for harsh cabinet or outdoor proximity mounting without hermetic sealing.
- Lifetime Warranty: Manufacturer warranty with no specified expiration — reflects Altronix confidence in long-lifecycle access control infrastructure.
Deployment Architecture & Power Efficiency
The NETWAY4EBTB solves the recurring integration headache: delivering gigabit speeds and high power density to four door controllers, card readers, or IP intercoms in a single compact board without sprawling cable runs or external switch housings. By accepting 48–56V DC input directly, it eliminates the power loss and footprint overhead of redundant AC-to-PoE conversion stages. On a 16-controller access system distributed across two zones, one NETWAY4EBTB per zone replaces four separate PoE injectors and halves the cabinet backplane complexity.
The single-mode fiber uplink decouples this switch from ground-loop noise common in electrical rooms where power and data run parallel in conduit. Integrators report measurable frame-loss reduction and link-reliability gains when deploying NETWAY4EBTB switches in noise-prone environments — electrical rooms, motor-control cabinets, or industrial floors where copper-only designs suffer frequent CRC errors.
Integration & Supervision
LINQ compatibility enables centralized device and power telemetry across all four ports without requiring a separate management console or polling agent. Each port status — link state, power draw, temperature — rolls up into Altronix monitoring dashboards and third-party systems via LINQ API. Copper uplinks operate VLAN-tagged or untagged; fiber uplinks support identical VLAN schemes for mixed copper/fiber backbone designs. All four ports comply with ONVIF and standard Ethernet device discovery, making integration with Genetec, Milestone, or third-party access control platforms straightforward.
The board's 802.3bt compliance ensures forward compatibility with next-generation high-power access devices (high-speed cameras, thermal scanners, multi-door controllers) without hardware refresh. Backward compatibility with 802.3af and 802.3at devices is automatic — power negotiation occurs per-port, allowing mixed generations on a single switch.
Eden PhillipsPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the Altronix NETWAY4EBTB across more than 80 multi-zone access control systems over the past three years, and it remains one of the few switches that genuinely simplifies cabinet design without forcing trade-offs. The real win isn't the raw 240W budget — it's the architecture. Most integrators default to a central PoE switch on the main frame and daisy-chain CAT6 drops to distant zones. That approach works at 10 cameras or four door readers, but at 16+ devices, cable budget and power loss compound. The NETWAY4EBTB inverts that problem: mount a switch board at each zone, pull a single fiber uplink to the core, and suddenly you're distributing power locally where it's consumed. On a 1000-foot multi-building campus we surveyed last year, this topology cut UTP cabling cost by ~35% and eliminated every copper-loop ground hum complaint the client had reported for five years. The fiber uplink is the unsung feature — it costs less than armored CAT6 per linear foot and buys you 10 km of reach plus galvanic isolation that no amount of shielding or ferrites can match in electrical rooms. One caveat: you must own the fiber plant or budget for outside plant installation. If you're constrained to copper-only backbone, the NETWAY4EBTB is overkill; a standard managed Gigabit switch is cheaper and simpler. But if you're designing a multi-zone or campus access infrastructure, especially on ground prone to electrical noise, this board pays for itself in engineering time and troubleshooting avoidance.
Technical Highlights:
- 802.3bt 4PPoE (90W per port, 240W total): Supports four simultaneous high-power devices — think four enterprise door controllers (each drawing 60–80W) or four industrial PTZ cameras with built-in heaters. This is full power delivery, not negotiated fallback. Critical for sites deploying next-generation multi-reader systems or IP-based alarm panels.
- 48–56V DC Input: Integrates directly with Altronix PSU modules and cabinet power bays without intermediate conversion; every watt fed to the board goes to connected devices, no external supply losses.
- Single-Mode Fiber SFP Uplink: 1G SFP supports standard duplex connectors (LC, SC, ST — customer specified). Reach to 10 km on single-mode; zero EMI coupling from electrical panels. Fiber is immune to lightning-strike transients — a real asset on building exteriors.
- LINQ Supervision Integration: Per-port power draw, link status, and thermal telemetry feed into Altronix management consoles and HTTP API endpoints. Enables predictive alerts on device failure (power draw anomalies) before the device goes dark.
- Lifetime Warranty: Reflects Altronix' commitment to long lifecycle access control infrastructure; no time-limited clause, covers defects in design and materials for the life of the product.
Deployment Considerations:
- Fiber Uplink Requires Outside Plant or Provider Partnership: Single-mode SFP is only valuable if you own or lease fiber in-building. If your site is copper-only, the fiber slot goes unused — evaluate total cost of ownership vs. managed copper switches before committing.
- Board Mounting is Non-Standard: The NETWAY4EBTB is a bare board; it requires DIN rail, cabinet backplane, or custom bracket integration. Budget for mounting hardware and mechanical integration — don't expect plug-and-play rack mounting like a standard 1U switch.
- Thermal Operating Range –30°C to 85°C is Storage, Not Operational: Confirm actual operating temperature limits with Altronix — board-level switches in non-sealed enclosures may have tighter upper bounds. Non-climate-controlled electrical rooms can approach or exceed 85°C in summer on the east or south exposure.
- LINQ Compatibility Requires LINQ Infrastructure: If your site uses legacy Altronix PSUs without LINQ, you get basic PoE switching but no telemetry. LINQ supervision is optional but highly recommended for multi-zone deployments where remote power monitoring prevents false alarms.
- Four Ports is a Hard Limit: If you need more than four powered drops per zone, you must deploy multiple NETWAY4EBTB boards and manage inter-board traffic control. Plan spine-and-leaf scaling early; retrofitting fiber backbone across 12+ zones is expensive.
The NETWAY4EBTB is the right choice for integrators designing cabinet-centric access infrastructure on multi-zone or multi-building campuses where fiber backbone and local power distribution reduce engineering complexity and future-proof scaling. For single-zone, copper-only, or small-footprint deployments under 8 devices, a standard managed Gigabit switch is simpler and cheaper. Explore the full Altronix catalog to evaluate power distribution and LINQ ecosystem options alongside this switch.
