Axis TU8004 90W PoE++ Midspan Injector - 02783-001

We've deployed the Axis TU8004 across retail, hospitality, and industrial sites where existing PoE+ switches couldn't keep pace with multi-megapixel camera rollouts or edge-analytics-enabled PTZs. The real win is simplicity: no switching upgrades, no planning ahead for future power consumption — just plug the injector into any 802.3at switch and it handles power negotiation automatically. We've also seen integrators use the TU8004 as insurance against switch failure: a single midspan powering a cluster of critical cameras means swapping the midspan is faster than replacing a stack of switches or reterminating your entire building. Against competing solutions (Cambium PoE Max, Ubiquiti PoE++ injectors), the Axis unit stands out for shielded connectors — in electrically noisy warehouses or manufacturing floors with variable-frequency drives and arc welders, that shielding eliminated intermittent camera dropouts we'd traced to common-mode noise on the Ethernet return path. The auto-detection of power class is also more reliable than some aftermarket units that require DIP switches or web configuration.

Technical Highlights:

• Dual-Channel 0.8A Architecture: High-power cameras (Axis Q62xx PTZs, some Hanwha 4K+ models) demand sustained 80–90W delivery. Splitting power across two independent 0.8A channels keeps conductor temperature well within limits even at full draw, versus single-channel designs that can experience voltage sag or safety shutdown under sustained load. This design choice directly impacts uptime.
• 2.5 and 5Gbps Passthrough: Future-proofing your network layer. We've already seen Axis release cameras with 5Gbps modules; the TU8004 doesn't become a bottleneck as you upgrade. Data bandwidth is separate from power bandwidth, so 90W delivery and 5Gbps streaming don't contend for the same resource.
• Shielded RJ45 and EMI Compliance: EN 55032 Class B means this unit has undergone radiated and conducted EMI testing. In HVAC plenums, near lighting dimmer circuits, or outdoor pedestals adjacent to cellular antennas, that shielding and filter design matter. We've seen unshielded units introduce noise floor elevation on longer cable runs (>50m) that degraded video quality in low-light scenes.
• Wide Temperature at Full 90W: Operating -20°C to 40°C at full power output is a rare spec in the midspan category. Most competitors derate to 60W at 40°C or require external fans. This unit's thermal design (presumably heavier heatsinking) enables outdoor pedestal deployment in hot climates without derating.
• Input Voltage Flexibility: 100–240V AC, 50–60 Hz with no manual switch. A single SKU serves global deployments. We've reduced inventory complexity and avoided customs hold-ups from region-specific variants.

Deployment Considerations:

• The TU8004 is a midspan, not an endspan: it sits between your PoE+ switch and the camera. If your switch is a non-PoE dumb switch, the TU8004 will not receive power from the camera side — you must supply AC input. Verify AC outlet or UPS availability in your installation location.
• Daisy-chaining multiple TU8004 units on the same Ethernet trunk works, but each injector consumes one port (or one pair of output/input ports if you're using them sequentially). In a dense multi-camera deployment, you may need multiple injectors or a PoE++ switch upgrade for scalability. Plan ahead if you anticipate >3 high-power cameras on a single network segment.
• The 0.2W idle power draw is minimal, but in a large-scale deployment (10+ units), that's still 2W continuous. UPS runtime calculations should account for this if the injectors are on backup power.
• Thermal derating below 0°C and above 40°C is documented (60W at 60°C, 30W at 65°C). If you're deploying in a non-air-conditioned outdoor enclosure in a hot climate, verify that your highest-power camera fits within the thermal de-rating envelope. Most cameras operate fine at 60W, but multi-sensor or PTZ units may require the full 90W only in summer.
• Shielded RJ45 connectors require proper grounding of the shield on at least one end (typically the cabinet side) to be effective. If your patch panel is unshielded, the EMI immunity benefit is reduced. Document your wiring standard to ensure the installer terminates and grounds appropriately.

The Axis TU8004 is the go-to choice for system architects retrofitting high-power cameras into existing non-PoE++ infrastructure, and for integrators who want to reduce switch upgrade complexity and cost without sacrificing power delivery reliability. For large new-build projects where you can spec a PoE++ switch from the ground up, a native switch solution eliminates the midspan entirely — but in the 80% of installations that involve existing network gear, the TU8004 is a smart, cost-effective bridge. See the Axis catalog for complementary networking and power products.