German manufacturer Devolo wants to reintroduce U.S. consumers to powerline networking. But it’s not using the HomePlug AV2 standard you might be familiar with from 10 years ago. Devolo’s Magic 2 series of products is based on the ITU G.hn standard that’s more widely popular in Europe. Devolo is also launching a series of hybrid devices that use both powerline networking and mesh Wi-Fi to blanket a home with coverage.
The basic technology isn’t radically different from HomePlug: You’ll plug one component into an outlet near your router and connect the two using an ethernet cable. You’ll plug a second and subsequent adapters into any other outlets in your home where you need network coverage. The one component connected to your router can support up to eight adapters. Depending on which kit you buy, the second and subsequent adapters will have one, two, or three gigabit ethernet ports for hardwired connections, and some will also function as Wi-Fi 5 (802.11ac) access points in a mesh network.
The primary advantage of any powerline networking technology is that it takes advantage of the wiring that’s already inside your walls. Rather than drill holes, pull cable, and install new connections to accommodate ethernet, you simply plug boxes into your electrical outlets and the same wires that carry power now also carry data packets. Devolo says the G.hn Wave 2 standard can deliver wired data transfer speeds up to 2Gbps.
When it works, it’s great. But in my earlier experiences with HomePlug technology, I encountered problems where the electrical outlets on AFCI circuits, which are typically required in bedrooms with newer construction, drastically reduced the bandwidth that the powerline devices could otherwise deliver. Devolo says the G.hn standard it uses is not subject to the same problems when installed on AFCI circuits. No newcomer to the market, Devolo says it has sold 44 million powerline communication devices worldwide.
Mesh Wi-Fi access points
On the Wi-Fi side, each of Devolo’s new products support Wi-Fi 5 and nearly all the latest Wi-Fi features: MU-MIMO, beamforming, access-point steering, band steering, and client steering. The company says it didn’t move to Wi-Fi 6 (aka 802.11ax) or Wi-Fi 6e (which taps newly available 6GHz wireless spectrum) because it wanted to keep the cost of the product down. If you’re not familiar with all that terminology, skip to this section and I’ll provide brief explanations. If you don’t need the primer, these are the products that Devolo has started shipping:
Need to brush up on your Wi-Fi networking terminology? These brief definitions will help you understand the features in Devolo’s new powerline networking products.
MU-MIMO: This technology enables a Wi-Fi router or—in Devolo’s case, a Wi-Fi access point—to communicate with multiple client devices simultaneously, rather than forcing each device to take a service turn. This is particularly valuable when multiple devices are streaming music or video. Client devices on the network must also support MU-MIMO for this to work, but the technology has been around for four or five years, so that shouldn’t be a problem here.
Band steering: Devolo’s Wi-Fi access points are dual-band devices, operating separate networks using both 2.4- and 5GHz radio spectrum. When dual-band client devices (laptops, smartphones, etc.) join the network, the access point will automatically direct the client to the frequency band that can deliver the best performance to the client.
Beam forming: A router or access point can focus its wireless signal towards the client, instead of just radiating the signal from its antenna in every direction. Concentrating its signal this way both increases the speed of the connection and renders it more reliable.
Client steering: In a mesh Wi-Fi network, client steering automatically directs client devices connected to the network to the mesh node that can deliver the best performance. This is particularly important for mobile devices, such as smartphones, because the router can hand the client device off from one node to another that’s closer as you move around the house.
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Michael is TechHive's lead editor, with 30+ years of experience covering the tech industry, focusing on the smart home, home audio, and home theater. He built his own smart home in 2007 and used it as a real-world test lab for product reviews. Following a relocation to the Pacific Northwest, he is now converting his new home, an 1890 Victorian bungalow, into a modern smart home.