Westward Sales Blog

Power over Ethernet, or PoE, is a popular Ethernet technology that transfers data and electrical power simultaneously over a single cable. Standard Ethernet can only transfer data and is ubiquitous in all networks from home, business, and data centers.

A PoE network consists of Power Sourcing Equipment (PSE) that supplies electricity to Powered Devices (PD) like a PoE injector. 

Ethernet switches with PoE ports are a type of PSE powering PD devices. Examples are IP cameras, wireless access points, phones, and sensors. The watts consumed by PDs connected to a port of the PSE cannot exceed the maximum wattage supplied by the PSE.

Sometimes, you will encounter an application where you must connect a PoE device, like a camera, to a network incompatible with PoE technology. Use PoE injectors in this situation.

This convenient device accepts a standard Fast or Gigabit Ethernet input. Then, it outputs data and power on a PoE port, eliminating a separate power cable to the PoE-enabled electronics. 

These devices are set up quickly and easily, allowing focus of your attention on higher priorities. This technology provides a wide array of benefits.

What are the Benefits of a PoE Injector?

• Using a traditional Ethernet cable, they connect a basic Ethernet switch to PoE-compliant devices.
• They reduce the need for a separate power cable to be connected to the device. There is no need to locate a nearby AC outlet.
• They help save money, space, and installation time.
• They can add new devices to existing legacy networks improving scalability.

How Do PoE Injectors Work?

Think of it as a “middle man” between two components: a non-PoE compatible network switch and an external device like a PoE camera.  

Power is added to the Ethernet cable at the connection point. In other words, any connected device that meets the IEEE 802.3 PoE standards (af, at, or bt) is adequately powered.

POE injectors provide DC power to devices considered “low power” – most only require 15 watts or less for operation. 

Although, the PoE standards accommodate devices requiring up to 30 and 60 watts. These injectors are commonly employed to connect and power devices in areas with limited access to or without conventional power outlets. Due to their versatile nature, many are installed in manufacturing or industrial environments such as factories and outdoor locations. Because of this, they come with rugged features that stand up to harsh conditions.

For example, industrial-grade injectors:

• Are packaged in a rugged DIN rail mount enclosure.
• Operate successfully in wide temperature ranges.
• Are resistant to shock and vibration.
• Offer superior protection against electrical noise.
• Protect against current and voltage overloads.

The Major Benefits of PoE Injectors

A significant benefit of a PoE injector is elimination of some of the complex cabling typically required in network installations.

In most situations, a regular Ethernet cable is used to connect from the local area network (LAN) switch to the PoE-compatible device.

Eliminating an additional power cable, otherwise required, offers fast, efficient deployment. Thus, reducing costs in a situation where you need to make every dollar count.

Power cabling is inherently expensive – not to mention that it takes up a significant amount of space. All these pain points can be eliminated with the use of a power-over Ethernet injector since Ethernet cables themselves are neither expensive nor bulky.

One particular benefit comes by way of the manufacturing industry. In many of these organizations, space is always at a premium. You may have limited access to the area needed where you could begin a new installation for the new required cabling. 

However, fresh technology can be integrated into your network with this device. So rather than spending time, money, and energy on building a new network (and mitigating the risk that always comes with that), you can simply extend your existing one and achieve the same results.

There are other benefits of using an Ethernet PoE injector as well, which include but are not limited to ones like:

There are other benefits of PoE injectors as well, which include but are not limited to ones like:

1. Thanks to various power configurations, these injectors offer superior flexibility to even complicated networking environments.
2. There is no longer a need to maintain a separate power supply exclusively for powering cables as required in a more traditional PoE deployment.
3. These devices comply with the strict IEEE 802.af/at/bt standard. They are designed to avoid damage to connected devices – even those not PoE compliant.

Regardless of the type of application you’re working with, the chances are high that your network infrastructure can benefit from at least a few of the features the right PoE injector has to offer.

Additional Considerations

When selecting one, you’ll have two types to choose from: active and passive models. Through handshaking, an active type discovers more information about the connected devices’ current flow. It then matches the flow with the power draw of the connected device. 

When selecting one, you’ll have two types to choose from: active and passive models. Through handshaking, an active type discovers more information about the connected devices’ current flow. It then matches the flow with the power draw of the connected device. 

Active injectors eliminate the risk of damaging the device and are the most common type used in industrial environments.

Active injector types follow the IEEE 802.3af/at/bt standards; however, a passive Ethernet PoE injector does not. Passive types don’t perform a handshake sequence with the connected device. 

They are commonly referred to as “Always On” injectors because they send constant power through the Ethernet cable to the device it is connected to. They are riskier, having the potential to supply more power than the device requires. 

Therefore, you need to ensure that the power the PoE device needs and the power supplied by the injector is exact.

Why Choose Westward Sales for Your Industrial PoE Injector Needs?

Westward Sales offers a range of reliable and durable products to enhance your network infrastructure. Our selection of industrial-grade products provides seamless power and data transmission while standing up to the rigors of harsh conditions. 

Whether you’re powering IP cameras in remote outdoor locations or connecting wireless access points, our injectors deliver consistent performance.

What sets Westward Sales apart is our commitment to quality and customer satisfaction. We understand each project is unique, so we offer personalized solutions to your needs. 

Our PoE injectors and other products comply with IEEE 802.3 standards and guarantee protection against electrical overloads. 

Our team of experts is always available to help you choose the right injector for your application. We will ensure you get the most out of your investment.

By choosing us, you’re not just buying a product. Instead, you’re gaining a partner dedicated to helping you build a stronger, more efficient network. Let us help you power your network with confidence.

Contact Us to Learn More

To understand more about the benefits a PoE injector brings to your next project, or if you’d like to discuss your networking equipment needs with a specialist, please contact us today.

Our engineers are ready to assist you through the selection process. We help you find the perfect solution for your network.