Gigabit Industrial 30W PoE+ Injector

1. Product Overview

This manual applies to the POE (Power over Ethernet) series of accessories, including core products such as POE power supplies (injectors), POE splitters, and POE extenders. POE technology transmits both data and power simultaneously over a single Ethernet cable, eliminating the need to lay separate power lines. This significantly simplifies the deployment of network devices while reducing installation costs and complexity.

The REVOTECH PSE5502G is a Gigabit Industrial 30W PoE+ Injector designed to convert low voltage DC 12-48V input to 48V PoE output. It is an unmanaged, plug-and-play device, requiring no configuration. It provides an economical, high-performance, and intelligent solution for PoE power and data communication, especially in scenarios where remote power supply is not feasible.

This injector complies with IEEE 802.3af/at/bt standards, featuring intelligent detection, overload protection, and short-circuit protection. It automatically identifies PoE-compliant Powered Devices (PDs), providing safe and stable power and data transmission services. It is suitable for a diverse range of environments, including homes, enterprises, campuses, and security surveillance systems, and supports the upgrade and retrofitting requirements of non-PoE equipment.

2. Safety Precautions

2.1 General Safety Guidelines

• Please operate the product within the working voltage and power ranges specified on its label. Operation exceeding these limits is strictly prohibited, as it may result in equipment damage or pose safety hazards.
• Prior to installation or wiring, ensure that the power supply to all equipment is disconnected to prevent electric shock or short-circuit accidents. When performing operations, please wear insulating gloves to avoid direct contact between your hands and metal connectors.
• Accessories must be stored in a well-ventilated, dry, and cool environment, away from water sources, high temperatures, flammable or explosive materials, and corrosive gases. Avoid exposure to direct sunlight or immersion in rainwater.
• The operating environment temperature must comply with the product specifications (typically -40°C to 75°C), and the relative humidity should be maintained between 10% and 90% RH (non-condensing).
• Unauthorized disassembly or modification of the accessory's housing or internal circuitry is strictly prohibited. Any repairs must be performed by qualified technical personnel; failure to comply will void the product warranty and may pose safety risks.
• If the accessory is to remain unused for an extended period, please disconnect its power supply to prevent excessive standby power consumption and premature equipment aging.

2.2 Wiring Safety Precautions

• Please use pure copper Ethernet cables of Cat5e specification or higher that comply with relevant standards. Avoid using Copper-Clad Aluminum (CCA) cables or inferior-quality cables; otherwise, this may lead to unstable power supply, data packet loss, or even cable overheating—caused by excessive electrical resistance—which could result in equipment damage.
• The transmission distance of the Ethernet cable must be kept within the product's specified range (standard PoE transmission distance is limited to 100 meters; the use of a repeater can extend this to 200 meters). Exceeding the specified distance will result in power attenuation and signal distortion.
• When routing cables outdoors, a lightning arrester must be installed. Additionally, both ends of shielded cables must be properly grounded to eliminate electromagnetic interference and prevent equipment damage caused by lightning strikes.
• When making connections, ensure that the interfaces are correctly matched; avoid reverse connections or misconnections, as this may prevent the device from functioning properly or result in equipment damage.

3. Product Interface Description

The PSE5502G PoE Injector features the following interfaces and indicators:

• Data In (Data Input Port): An RJ45 interface used to connect to standard ports on non-PoE network devices (such as switches or routers) for receiving data signals.
• PoE Out (PoE Output Port): An RJ45 interface used to connect to PoE-powered devices (such as IP cameras or wireless APs), transmitting both data and power simultaneously.
• Power (Power Port / DC IN): Connects to the accompanying power adapter to provide operating power to the supply unit.
• LED Indicators: PWR (Power Status) and PoE (Power Supply Status); these indicators display the device's operational status.

3.1 Indicator Light Descriptions

The meanings of the indicator lights are as follows:

• PWR (Power Indicator):
  • Off = No power
  • Solid (Green) = Normal power supply
  • Flashing = Power anomaly
• PoE (Power Supply Status Indicator):
  • Off = No powered device detected or no power being supplied
  • Solid (Green) = Normal power supply
  • Flashing (Green) = Power supply anomaly (e.g., overload, short circuit)
  • Yellow = Standby mode

4. Setup (Installation Steps)

4.1 Preparation

1. Inspect the accessory packaging to ensure it is intact; verify that all components are present and free from damage or missing parts.
2. Confirm whether the terminal devices (e.g., IP cameras, wireless APs) support PoE power supply. If using non-PoE devices, a PoE splitter must be used in conjunction.
3. Prepare pure copper Ethernet cables of Cat5e specification or higher that meet the requirements; cut the cables to the appropriate length based on the installation distance, and ensure the RJ45 connectors are securely crimped.
4. Verify that the power output of the power-sourcing equipment (e.g., PoE switches, power adapters) is compatible with the devices to prevent overloading.

4.2 Installation Scenario: Non-PoE Switch + PoE Injector + PoE Terminal Device (Most Common)

1. Power-off Operation: Disconnect all power sources from the non-PoE switch, the PoE injector, and the terminal device.
2. Connect Data Input: Insert one end of an Ethernet cable into a standard LAN port on the non-PoE switch, and insert the other end into the "Data In" port on the PoE injector.
3. Connect PoE Output: Insert one end of an Ethernet cable into the "PoE Out" port on the PoE injector, and insert the other end into the RJ45 network port on the PoE terminal device.
4. Power On: Plug the PoE injector's power adapter into a mains outlet, then connect it to the injector's "Power" port; subsequently, power on the non-PoE switch.
5. Status Check: Observe the indicator lights on the PoE injector. If the "PWR" light remains steadily lit, the "PoE" light remains steadily lit, and the terminal device boots up normally, the installation is successful.

5. Operating Instructions

5.1 Routine Operation

• Once the device has powered on, no manual configuration is required; the accessory will automatically detect the powered device (PD) and simultaneously initiate both power supply and data transmission (for unmanaged accessories).
• If you need to replace a terminal device, you must first disconnect the power to the PoE accessory before plugging or unplugging the network cable to prevent potential device damage caused by hot-swapping.
• Periodically check to ensure that network cable connections are secure and that the status indicators are functioning normally. If you observe abnormal indicator blinking, frequent terminal device restarts, or similar issues, promptly troubleshoot the network cable or the device itself.

6. Maintenance

• Environmental Conditions: Store and operate the device in a well-ventilated, dry, and cool environment. Avoid exposure to water, high temperatures, flammable or explosive materials, corrosive gases, direct sunlight, or immersion in rainwater.
• Cable Integrity: Regularly inspect all Ethernet cable connections to ensure they are secure and free from damage. Replace any worn or damaged cables promptly.
• Power Management: Disconnect the power supply to the PoE injector if it will not be used for an extended period to conserve energy and prolong equipment lifespan.
• Cleaning: Gently clean the exterior of the device with a dry, soft cloth. Do not use liquid cleaners or solvents.
• Firmware Updates: While this is an unmanaged device, if any firmware updates become available from the manufacturer, follow their instructions carefully.

7. Troubleshooting

• No Power (PWR LED Off):
  • Check if the power adapter is securely connected to the "DC IN" port and a working power outlet.
  • Verify the power adapter is functioning correctly.
• No PoE Output / Device Not Powering On (PoE LED Off):
  • Ensure the connected device is PoE-compatible (IEEE 802.3af/at).
  • Check the Ethernet cable connection between the PoE injector's "PoE Out" port and the powered device.
  • Verify the powered device is functioning correctly.
• Power Anomaly (PWR or PoE LED Flashing Green):
  • This indicates an overload or short circuit. Disconnect the powered device and check for faults.
  • Ensure the total power consumption of the connected PD does not exceed the injector's 30W capacity.
  • Inspect the Ethernet cable for any damage or short circuits.
• No Data Transmission:
  • Check the Ethernet cable connection between the non-PoE switch/router and the injector's "Data In" port.
  • Verify the Ethernet cable between the injector's "PoE Out" port and the powered device is secure.
  • Ensure all Ethernet cables are Cat5e or higher and are pure copper, not CCA.
  • Confirm the total transmission distance does not exceed 100 meters (or 200 meters with a repeater).
• Intermittent Connection / Unstable Performance:
  • This can be caused by inferior-quality Ethernet cables (e.g., CCA cables). Replace with pure copper Cat5e or higher cables.
  • Check for electromagnetic interference, especially if cables are routed outdoors without proper grounding or lightning arresters.
  • Ensure the operating temperature is within the specified range (-40°C to 75°C).

8. Specifications

9. Warranty and Support

9.1 Warranty Information

• Warranty Period: This PoE accessory is covered by a 1-year free warranty service and lifetime maintenance support, effective from the date of purchase (excluding damage caused by human error or force majeure).
• Warranty Coverage: Covers malfunctions preventing normal operation that stem from inherent product quality issues—including damaged ports, circuit failures, abnormal indicator lights, etc. This coverage does not extend to peripheral accessories such as network cables or power adapters (which carry a separate 6-month warranty period).
• Exclusions: The warranty does not cover:
  1. Damage caused by human error (e.g., disassembly, modification, accidental drops, short circuits, etc.).
  2. Damage caused by force majeure events (e.g., lightning strikes, fire, floods, etc.).
  3. Expiration of the warranty period.
  4. Damage resulting from failure to operate the device in accordance with this user manual.

9.2 After-Sales Support

Should the device malfunction, please contact your authorized distributor or the official customer support team. Provide the product model (PSE5502G) and a detailed description of the malfunction to receive professional repair guidance.

10. User Tips

• Power Input Compatibility: Always ensure that the DC input voltage (12-48V) provided to the injector matches the requirements of your power source to prevent damage.
• Cable Quality Matters: For optimal performance and to avoid issues like unstable power or data loss, invest in high-quality, pure copper Cat5e or higher Ethernet cables.
• Environmental Considerations: While designed for industrial use, extreme conditions can still impact performance. Ensure the device is installed in an environment within its specified temperature and humidity ranges.
• Check LEDs First: When troubleshooting, always refer to the PWR and PoE LED indicators. They provide immediate visual feedback on the device's power and PoE status, helping to quickly diagnose common issues.