Are PoE splitters suitable for wireless access points?

Yes, PoE splitters are suitable for wireless access points (APs) that do not natively support PoE but still require both power and data to function. Using a PoE splitter allows you to power a non-PoE access point via a standard Ethernet cable, eliminating the need for a separate power adapter. This simplifies installation, especially in areas where power outlets are scarce or difficult to access.

How PoE Splitters Work for Wireless Access Points

A PoE splitter is a device that takes a PoE-enabled Ethernet cable (which carries both power and data) and splits it into two separate outputs:

1. Ethernet data – for network connectivity to the access point.

2. DC power – converted to the required voltage for the access point.

Step-by-Step Process of Using a PoE Splitter for Wireless APs

1. PoE Power Source

--- You will need a PoE injector or a PoE-enabled switch as the power source.

--- PoE Injector: If your network switch does not support PoE, a PoE injector is placed between the switch and the access point to add power to the Ethernet cable.

--- PoE Switch: If you have a PoE-enabled switch, it will provide both power and data through the Ethernet cable directly.

2. Ethernet Cable Carries Power and Data

--- A single Ethernet cable (Cat5e, Cat6, or higher) is run from the PoE switch or injector to the access point’s location.

--- This cable carries both data (network connectivity) and power (typically 48V).

3. PoE Splitter Separates Power and Data

--- At the access point’s location, the PoE splitter is connected to the Ethernet cable.

--- The splitter extracts the power from the PoE signal and converts it to a lower voltage (such as 5V, 9V, 12V, or 24V, depending on the access point's requirement).

--- The Ethernet data is passed through unchanged.

4. Connecting to the Wireless Access Point

--- The DC power output from the splitter (usually via a barrel jack) is connected to the power input of the access point.

--- The Ethernet output from the splitter is connected to the Ethernet port of the access point.

Benefits of Using a PoE Splitter for Wireless Access Points

1. Simplifies Installation

--- Eliminates the need for a separate power cable and power outlet at the installation site.

--- Ideal for mounting APs on walls, ceilings, or other remote locations.

2. Cost-Effective

--- Reduces the need for additional power infrastructure (such as running new power lines).

--- Uses existing Ethernet cabling, making it a cheaper alternative to running power cables.

3. Flexible Deployment

--- Allows APs to be placed in optimal locations (e.g., ceilings, hallways, outdoor areas) without being limited by the location of electrical outlets.

4. Centralized Power Management

--- If using a PoE switch, all devices can be powered from a central location, simplifying maintenance and reducing downtime.

Key Considerations When Using a PoE Splitter for Wireless APs

1. Voltage Compatibility

--- Wireless access points require specific voltages (commonly 5V, 9V, 12V, or 24V).

--- Ensure the PoE splitter matches the AP’s voltage requirements.

2. Power Requirements

Different PoE standards supply different power levels:

--- PoE (802.3af): Up to 15.4W per port.

--- PoE+ (802.3at): Up to 25.5W per port.

--- PoE++ (802.3bt): Up to 60W or 100W per port.

Check the power consumption of your wireless AP to ensure the PoE source provides sufficient power.

3. Distance Limitations

--- PoE can transmit power and data up to 100 meters (328 feet) using standard Ethernet cables.

--- For longer distances, a PoE extender or higher-powered PoE source may be needed.

4. Ethernet Speed Support

--- Some PoE splitters only support 10/100 Mbps speeds, while others support Gigabit (1000 Mbps) speeds.

--- Ensure the splitter supports the required speed for optimal AP performance.

Example Setup Using a PoE Splitter for a Wireless AP

Scenario

You need to install a wireless access point on a ceiling, but there is no power outlet nearby. However, there is an Ethernet cable running to that location.

Equipment Needed

--- PoE Switch (or PoE Injector)

--- Ethernet Cable (Cat5e/Cat6)

--- PoE Splitter (with correct voltage output)

--- Non-PoE Wireless Access Point

Installation Steps

--- Connect the PoE switch to the network router.

--- Run an Ethernet cable from the PoE switch to the ceiling location.

--- Connect the PoE splitter to the Ethernet cable at the ceiling.

--- Use the power output from the splitter to connect to the access point’s power input.

--- Connect the Ethernet output from the splitter to the access point’s Ethernet port.

--- The access point is now powered and connected to the network.

Conclusion

Yes, PoE splitters are suitable for wireless access points that do not natively support PoE. They provide an efficient way to power APs using a single Ethernet cable, reducing installation complexity and cost. However, it is essential to select a PoE splitter with the correct voltage, power output, and Ethernet speed to ensure optimal performance.