Gigabit Passive PoE Injector Module 12V to 24V/48V

The Gigabit Passive PoE Injector Module 12V to 24V/48V is a compact DC-DC power converter designed to power compatible Power over Ethernet (PoE) devices directly from a 12V DC power supply or battery system.

Featuring a switch-selectable 24V or 48V passive PoE output, this module converts 12V DC input power into a higher voltage and injects it into an Ethernet cable, allowing compatible networking equipment to receive both data and power through a single connection.

With dual RJ45 Ethernet ports supporting Gigabit data transmission up to 1000Mbps, the module is ideal for powering compatible wireless access points, outdoor CPE devices, wireless bridges, IP cameras and other passive PoE networking equipment.

The integrated DC-DC boost converter provides voltage conversion without requiring a separate mains-powered PoE injector, making this module particularly useful for solar installations, off-grid networking, battery backup systems and remote wireless communication projects.

Its compact PCB design makes it suitable for installation inside electronic enclosures, networking cabinets and custom power distribution systems.

Key Features

• 12V DC Input: Operates from a suitable 12V DC power supply or battery system.

• Selectable 24V or 48V Output: Switch between two passive PoE output voltages to suit compatible networking equipment.

• Gigabit Ethernet Support: Supports 10/100/1000Mbps Ethernet connections, with Gigabit data pass-through.

• Dual RJ45 Ports: Dedicated LAN input and PoE output connections for convenient installation.

• Integrated DC-DC Boost Converter: Steps up 12V DC input to the selected 24V or 48V output.

• Up to Approximately 29W Output: Rated at 24V 1.2A or 48V 0.6A, depending on the selected voltage.

• Passive PoE Technology: Supplies power directly over Ethernet without requiring IEEE 802.3af/at negotiation.

• Compact PCB Design: Lightweight construction suitable for custom networking installations and electronic enclosures.

• Onboard Filtering: Includes electrolytic capacitors and a toroidal inductor for power conversion and filtering.

• Ideal for Off-Grid Applications: Suitable for battery-powered networking, solar installations and backup power systems.

Applications

The 12V to 24V/48V Gigabit Passive PoE Injector Module is suitable for various networking and low-voltage power applications, including:

• Wireless Access Points: Power compatible passive PoE wireless access points and networking equipment.

• Outdoor CPE and Wireless Bridges: Suitable for compatible Ubiquiti, MikroTik, TP-Link and similar wireless networking devices.

• Solar and Off-Grid Networks: Operate passive PoE equipment from 12V battery or solar power systems.

• Load Shedding Backup Systems: Maintain power to compatible network devices using a suitable 12V DC battery backup.

• IP Surveillance Systems: Power IP cameras specifically designed for 24V or 48V passive PoE operation.

• Wireless Internet Service Providers (WISPs): Ideal for remote wireless links, outdoor radio installations and networking infrastructure.

• Vehicle and Caravan Networking: Provide passive PoE power for compatible networking devices from appropriately protected 12V DC systems.

• Remote Monitoring and IoT: Power compatible Ethernet-connected gateways, sensors and monitoring equipment.

Technical Specifications

• Product Type: Gigabit Passive PoE Injector / DC-DC Boost Converter

• Input Voltage: 12V DC

• Input Current: Approximately 3A at full load

• Input Connection: DC Female Barrel Jack via supplied cable

• Output Voltage: 24V DC or 48V DC (switch-selectable)

• 24V Output Rating: 24V DC @ 1.2A

• 48V Output Rating: 48V DC @ 0.6A

• Maximum Rated Output Power: Approximately 29W

• Output Voltage Selection: Onboard selector switch

• Ethernet Ports: 2 × RJ45 Female

• LAN Port: Ethernet Data Input

• PoE Port: Ethernet Data + Power Output

• Ethernet Speed: 10/100/1000Mbps

• PoE Standard: Passive PoE (Non-IEEE 802.3af/at)

• Power Conversion: DC-DC Step-Up / Boost Converter

• Power Injection: Gigabit Ethernet centre-tap injection

• PoE Polarity: Confirm the device's required pinout and polarity before connection

• PCB Design: Compact Open-Board Module

How Does the Passive PoE Injector Work?

The Gigabit Passive PoE Injector combines Ethernet data and DC power into a single Ethernet cable.

1. Connect 12V DC Power: Supply the module with 12V DC using the included barrel jack connection.

2. Select the Output Voltage: Set the onboard selector switch to either 24V or 48V according to the connected device's requirements.

3. Connect the LAN Cable: Connect an Ethernet cable from your router, network switch or other Ethernet source to the LAN port.

4. Connect the PoE Device: Connect a compatible passive PoE device to the PoE output port using an Ethernet cable.

5. Power and Data Transmission: The module delivers Ethernet data and the selected DC voltage to the connected device.

This provides a convenient solution for supplying power and network connectivity through a single Ethernet cable.

Important Compatibility Information

Passive PoE Only: This module uses passive Power over Ethernet technology and does not support IEEE 802.3af, 802.3at or 802.3bt power negotiation.

Device Compatibility: Only connect equipment specifically designed to accept the selected 24V or 48V passive PoE voltage and the module's power injection configuration.

Incorrect Voltage Warning: Connecting a 24V device while the module is set to 48V may permanently damage the connected equipment.

Non-PoE Equipment: Do not connect laptops, computers, standard Ethernet switches or other non-PoE devices directly to the powered PoE output.

Output Current: The maximum output is approximately 1.2A at 24V or 0.6A at 48V. Ensure the connected equipment does not exceed these ratings.

Power Supply Requirements: Use a suitable 12V DC power supply capable of delivering approximately 3A or more, depending on operating conditions.

PoE Pinout: Verify the required passive PoE polarity and pin configuration of the connected equipment before installation. Not all passive PoE devices use the same power injection arrangement.

Voltage Selection: Always disconnect power before changing the 24V/48V selector switch.

Package Includes

• 1 × Gigabit Passive PoE Injector Module – 12V to 24V/48V

• 1 × DC Female Barrel Jack Power Input Cable

The Gigabit Passive PoE Injector Module provides a practical solution for powering compatible 24V and 48V passive PoE devices from 12V DC systems, making it ideal for wireless networking, solar installations, remote monitoring and battery backup applications.