If you’re exploring Power over Ethernet (PoE) for your home or business, you’ve probably come across terms like PoE adapter (injector), PoE splitter, and PoE extender. They might sound interchangeable, but each plays a very different role in powering and connecting to your devices.
This guide breaks down the key differences, so you can choose the right PoE solution for your setup.
PoE Injector
A PoE adapter, also known as a PoE injector, adds power to your existing Ethernet connection. It’s a perfect solution when you already have a non-PoE switch or router but want to power a PoE-compatible device like an IP camera, wireless access point, or VoIP phone.
There are two main types of PoE injectors—Active PoE and Passive PoE. Active PoE injectors follows IEEE standards and includes smart power detection, while Passive PoE injectors delivers constant voltage without negotiation. If you’d like to learn more about their differences, check out Active PoE vs. Passive PoE – Which One Is Right for You?
Example: You’re installing an Omada EAP access point on the ceiling; an POE170S injector solves this by combining power and data into one Ethernet cable.
PoE Splitter
A PoE splitter does the opposite-- separates power and data from a PoE-enabled Ethernet cable. PoE splitter is useful for devices, such as Wi-Fi access points or security cameras, that are often located in hard-to-reach places like ceilings. The splitter converts the power into a usable voltage (like 12V, 9V, or 5V DC), meaning you can power the device and provide network connectivity without needing a separate wall outlet or running AC power cabling to the ceiling.
Example: You want to use a non-PoE device. A PoE10R delivers the right voltage to power the phone while maintaining network connection, simplifying installation and eliminating cable clutter overhead.
PoE Injector & Splitter
On the other hand, PoE injector and PoE splitter can be used together in the network setup. This combination helps deliver both power and data over long distances when one end of your system isn’t PoE-compatible.
For example, you can use an Omada PoE170S injector to send power and data through a single Ethernet cable, then connect to a PoE splitter at the other end to separate the power and data for a non-PoE device. This setup simplified cabling and flexible installation—even in mixed-device environments.
PoE Extender
A PoE extender expands both power and data transmission beyond standard 100-meter Ethernet cable limit. It’s ideal for outdoor APs, remote security cameras, or digital signage placed far from your main switch.
Example: A business wants to mount a security camera 200 meters away from the main building. By adding a PoE10E extender, they can double the distance while keeping both power and data stable. Instead of installing costly electrical wiring, you can extend your network using just the Ethernet.
How to choose PoE Devices?
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Choose a PoE Injector if you want to power a single device without upgrading your switch.
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Choose a PoE Splitter if you have a non-PoE device but want to use existing PoE cabling.
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Choose a PoE Extender if your device is located more than 100m away from the power source.
Understanding the difference between PoE injectors, splitters, and extenders helps you build a cleaner, more reliable, and scalable network—whether at home, in the office, or across large facilities. Omada offers a wide range of PoE solutions to fit various networking needs. With Omada’s comprehensive lineup, you can enjoy seamless power delivery, simplified cabling, and maximum flexibility for any setup.