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Home > Blog > Rj45 Dc Power Poe Injector

Rj45 Dc Power Poe Injector

2025-12-20

1. Core Functions

  1. Simultaneous Data & Power Transmission

    • Delivers both Ethernet data and DC power over a single Cat5/Cat5e/cat6 cable, eliminating the need for separate power lines.

    • Typical Use Cases: Outdoor IP cameras, wireless access points (APs), VoIP phones, and industrial sensors in areas without easy access to power outlets.

  2. Passive PoE Technology

    • Active PoE (IEEE 802.3af/at/bt): Requires device-to-Injector Power negotiation, supports higher power (up to 90W), but costs more.

    • Passive PoE: Fixed voltage output (e.g., 12V/24V), cost-effective, but requires voltage matching with the powered device to avoid damage.

    • Principle: Transmits DC power through unused wire pairs (e.g., pins 4,5 for positive; 7,8 for negative) without protocol negotiation, ensuring broader compatibility.

    • Comparison with Active PoE:

2. Technical Specifications (Example: Tycon POE-INJ-S)

  1. Power Delivery

    • Pin Configuration: Pins 4,5 (+); Pins 7,8 (-).

    • Voltage Range: Supports 12V–24V DC input, with output power determined by input voltage and current (e.g., 24V/1A = 24W max).

  2. Compatibility

    • cable Types: Cat5/Cat5e/Cat6, with transmission distances up to 100m (quality-dependent).

    • Powered Devices: Requires compatibility with passive PoE or voltage matching (e.g., select IP cameras, wireless equipment).

  3. Environmental Protection

    • Shielding: Metal casing reduces electromagnetic interference (EMI), ideal for industrial settings.

    • IP Rating: Some models achieve IP67 (dustproof/waterproof) for outdoor durability.

3. Typical Applications

  1. Outdoor Surveillance Systems

    • Scenarios: Parks, parking lots, construction sites.

    • Advantage: Single-cable power/data transmission simplifies installation; waterproof design extends equipment lifespan.

  2. Industrial Automation

    • Scenarios: Production line sensors, robotic controls, PLCs.

    • Advantage: Vibration-resistant and anti-interference features ensure stable operation in harsh environments.

  3. Temporary Network Deployments

    • Scenarios: Exhibitions, music festivals, emergency communications.

    • Advantage: Quick-connect design reduces setup time; waterproofing ensures functionality in rainy conditions.


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Fangbei, a premier manufacturer specializing in network connectors, terminals, electronic components, and cutting-edge network tools.

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+86 769 8127 1686  +86 186 8105 2977

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186 8105 2977

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