What voltage options are available for PoE splitters (e.g., 5V, 9V, 12V)?

PoE splitters extract power from a Power over Ethernet (PoE) source (typically 48V–57V DC) and convert it to a lower voltage suitable for non-PoE devices. The available voltage options depend on the PoE standard being used and the power requirements of the connected device.

1. Common PoE Splitter Voltage Options

2. Detailed Breakdown of Voltage Options

(a) 5V Output (Low-Power Devices)

Common for small electronics and embedded systems.

Typical applications:

--- Raspberry Pi and other single-board computers.

--- IoT sensors and smart home devices.

--- USB-powered devices.

--- Usually supports up to 2A output (10W max).

(b) 9V Output (Medium-Power Devices)

Less common but used for industrial controllers and specialized networking devices.

Typical applications:

--- Some older access points.

--- Embedded network controllers.

--- Custom-built industrial electronics.

--- Supports up to 2A output (18W max).

(c) 12V Output (Standard Network Devices)

The most widely used voltage for PoE splitters.

Typical applications:

--- IP cameras (fixed, dome, bullet types).

--- VoIP phones.

--- Network media converters.

--- Small wireless access points.

--- Usually provides up to 2.5A output (30W max).

(d) 24V Output (High-Power Devices)

Used for specialized networking and industrial equipment.

Typical applications:

--- Wireless bridges and outdoor APs.

--- PTZ (Pan-Tilt-Zoom) cameras with motors.

--- Industrial sensors and automation systems.

--- Can supply up to 2.5A (up to 60W max).

(e) 48V Output (Enterprise & Industrial Applications)

Requires IEEE 802.3bt (PoE++) support.

Typical applications:

--- High-performance Wi-Fi 6 access points.

--- Digital signage displays.

--- Smart lighting and building automation.

--- Thin clients and mini PCs.

--- Can provide up to 100W of power.

3. How to Choose the Right Voltage for Your PoE Splitter

--- Check the device’s power input requirements (e.g., 12V 1A, 24V 2A).

--- Match the voltage with your device—using the wrong voltage can damage the device.

--- Ensure your PoE source (switch or injector) supports enough wattage.

--- Choose the correct output connector—most PoE splitters use 5.5mm x 2.1mm or 5.5mm x 2.5mm DC barrel jacks.

Conclusion

PoE splitters provide different voltage outputs (5V, 9V, 12V, 24V, and 48V) to accommodate various networking, IoT, and industrial devices. Choosing the right voltage ensures compatibility, efficient power delivery, and safe operation of your equipment.