Altronix NETWAY81BT 8-Port 90W PoE Midspan Injector

Overview

The Altronix NETWAY81BT is an 8-port, 480W midspan power injector built for surveillance integrators who need to deliver high-wattage PoE to cameras, access control readers, and intercoms without swapping out an existing non-PoE switch. Each of the eight ports delivers up to 90W independently, which means you can drive PTZ cameras, multi-sensor units, or PoE-powered door controllers that would overwhelm a standard 802.3at switch port — all without touching your core network infrastructure. At 17" wide and rack-mountable, the NETWAY81BT fits cleanly into a 1U or 2U slot in a standard security rack alongside your NVR and patch panel. For integrators browsing the Altronix surveillance power line, this midspan sits at the high-wattage end of the PoE product family.

Key Features

• 90W Per-Port Output: Each of the 8 ports independently delivers up to 90W — well above the 30W ceiling of 802.3at. That headroom lets you power high-draw devices like multi-imager panoramic cameras or PoE-powered PTZ units that standard injectors simply can't support. Check your camera's actual power draw; anything above 25W benefits from this port spec.
• 480W Total Power Budget: The 480W system capacity is shared across all 8 ports, so plan your load accordingly. Fully loading every port at max draw isn't realistic — budget realistically by summing your devices' actual wattage, not their theoretical maximums, and you'll find 480W handles a mixed load of 8 high-draw cameras or controllers comfortably.
• IEEE 802.3af/at Compliance: Backward-compatible with both 802.3af (15.4W) and 802.3at (30W) devices, so you're not locked into high-draw equipment only. A mixed installation — two PTZ cameras at 60W and six fixed domes at 12W each — runs without separate injectors or port negotiation headaches.
• Midspan Architecture — No Switch Replacement: Midspan means it inserts between your existing non-PoE switch and your devices, injecting power onto the data pairs. If your installed switch is still within its service life or is a managed unit you don't want to replace, the NETWAY81BT extends PoE capability without a forklift upgrade. This is the practical reason most integrators reach for a midspan over a new PoE switch on retrofit jobs.
• Operating Temperature -10°C to 50°C: Covers most indoor equipment room and IDF closet environments. It's not rated for outdoor or uncontrolled enclosures — keep it in a climate-controlled space. Installations in unconditioned mechanical rooms near the temperature ceiling should be evaluated carefully before committing.
• 1U Rack-Mount Form Factor (17" x 8.5" x 3.5"): Standard 19-inch rack width means it drops into any open 2U slot without custom hardware. At 10 lbs, it's dense but manageable for a single installer. Factor the depth of 8.5" when checking clearance behind the rack shelf.
• Scalable PoE Distribution for surveillance network deployments: Eight ports is the right scale for a single camera cluster — one building floor, one parking zone, one access-controlled entry sequence. Larger deployments stack multiple units or step up to a higher-port Altronix midspan in the same family.

Integration and Compatibility

The NETWAY81BT integrates with any IEEE 802.3af/at-compliant PoE device — IP cameras, IP intercoms, access control readers, wireless APs, and VoIP handsets all negotiate correctly. Since it operates as a pass-through midspan, it's transparent to your network switch and VMS; the switch sees only the downstream devices, and the NETWAY81BT handles power negotiation independently. For camera deployments, pair it with a compatible NVR on the same rack for a clean, centralized power and recording stack. It does not require any software configuration — power it on and it's operational. There is no managed interface, no SNMP agent, and no per-port shutdown capability in the evidence, so if per-port power cycling or remote monitoring is a requirement, evaluate a managed PoE switch instead. Review your PoE switch options if those features matter for your project.

Frequently Asked Questions

Q: What is the difference between a midspan injector and a PoE switch, and why would I choose the NETWAY81BT?

A: A midspan like the NETWAY81BT inserts between an existing non-PoE switch and your devices, adding PoE power without replacing the switch. It's the right choice on retrofit jobs where your installed switch has remaining service life, is managed/configured, or is cost-prohibitive to replace. If you're doing a greenfield installation, a PoE switch may be more efficient.

Q: Can the NETWAY81BT deliver 90W simultaneously on all 8 ports?

A: No. The unit has a 480W total power budget shared across all 8 ports. If all ports drew the full 90W simultaneously, that would require 720W — exceeding capacity. In practice, plan your actual device wattage totals and ensure they stay under 480W combined. Mixed loads (some high-draw PTZ, some low-draw fixed cameras) typically fit comfortably within that ceiling.

Q: Is the NETWAY81BT compatible with 802.3af devices, or does it require 802.3at?

A: It supports both IEEE 802.3af (up to 15.4W) and IEEE 802.3at (up to 30W) devices, as well as higher-wattage devices up to 90W per port. Standard PoE cameras and access control readers negotiate correctly without any configuration changes.

Q: Can the NETWAY81BT be installed in an outdoor enclosure or unheated space?

A: The rated operating temperature is -10°C to 50°C, which covers conditioned indoor equipment rooms and IDF closets. It is not rated for outdoor installation or direct exposure to weather. Installations in unconditioned spaces should be evaluated against the ambient temperature range before deploying.

Q: Does the NETWAY81BT require any configuration or software to operate?

A: No. It operates as a plug-and-play midspan — power it on and it begins delivering PoE to connected devices automatically. There is no management interface, no software setup, and no per-port configuration required based on available product documentation.

Marty Allison

The NETWAY81BT is the injector I reach for when a retrofit job has a perfectly functional managed switch that nobody wants to replace but the camera spec sheet is calling for 60–90W per port. The 90W-per-port ceiling covers virtually every high-draw PTZ and multi-imager camera on the market, and the 480W system budget means a realistically mixed 8-camera cluster — say, two PTZ units at 60W each and six fixed cameras at 12W each — lands at 192W total, well inside the envelope.

Technical Highlights:

• 90W Per Port: Supports PoE++ class devices that 802.3at switches cap out on — relevant for any PTZ drawing above 30W or multi-sensor panoramic heads.
• 480W Shared Budget: At 60W average draw per port you can run all 8 ports; at the full 90W per port you hit the wall at 5–6 ports. Model your load before finalizing the camera selection.
• IEEE 802.3af/at Backward Compatibility: No per-port negotiation headaches — low-draw fixed cameras and high-draw PTZ units coexist on the same injector without separate hardware or port segmentation.

Deployment Considerations:

• Install this in a conditioned equipment room or IDF — the -10°C to 50°C operating range is an indoor spec, not a telecom-cabinet-in-the-sun spec. Ambient temperature monitoring matters in dense rack environments near that 50°C ceiling.
• No managed interface means no per-port power cycling remotely. If your NOC needs to reboot a hung camera by cutting its PoE, this injector can't do that — factor a managed PoE switch into the design if remote power management is a hard requirement.

The NETWAY81BT is the right call for an 8-camera PTZ perimeter deployment on a campus where the existing edge switches are managed Cisco or HPE units locked down by IT — drop it in as a midspan, keep the switch config untouched, and deliver the wattage the cameras actually need.