Home Assistant supports Zigbee, Z-Wave, Thread/Matter, and Wi-Fi devices, with mesh protocols added via a USB dongle such as the Connect ZBT-2. This hub groups device and protocol guides for South African buyers choosing between standards.
The strength of Home Assistant is that it does not lock you into one wireless standard. It speaks Zigbee, Z-Wave, Thread, Matter, and Wi-Fi, which means you can pick the best device for a job and trust the hub to tie it all together. The catch for a new builder is knowing which protocol does what, and that one small USB dongle, like the Connect ZBT-2, can add the mesh radios your computer does not have built in.
Home Assistant supports Zigbee, Z-Wave, Thread, Matter, and Wi-Fi devices. Zigbee and Thread come through a USB dongle such as the Home Assistant Connect ZBT-2, which also handles Matter-over-Thread. There is no single best protocol: you mix them, choosing the right standard per device for range, battery life, and reliability.
Each wireless standard makes a different trade-off between range, power use, speed, and device choice. Wi-Fi is everywhere but power-hungry, so it suits mains-powered devices. The low-power mesh protocols, Zigbee, Z-Wave, and Thread, are built for battery sensors and switches that need to last months or years. Matter is the newer layer that aims to make devices from different brands work together regardless of the radio underneath.
Understanding the differences saves you money and frustration. Buy a Wi-Fi sensor for a job that needs a year of battery life and you will be changing cells constantly. Pick the right mesh protocol and it just runs.
Zigbee has anchored smart homes for the best part of two decades, with a huge device catalogue across brands like Philips Hue, IKEA, Aqara, Sonoff, and ThirdReality. It is a low-power mesh, so mains devices relay signals for battery ones, and it is mature, cheap, and well supported in Home Assistant through ZHA and Zigbee2MQTT. For most new builders, Zigbee is the sensible starting protocol thanks to sheer device availability.
Z-Wave is another long-standing low-power mesh, operating on a different frequency band to Zigbee, which means less interference from Wi-Fi congestion. Its device range is smaller than Zigbee's but its devices are known for reliability. It needs its own dongle, separate from a Zigbee or Thread one.
Thread is the newer low-power mesh, designed to be more robust and IP-based, which makes it a natural carrier for Matter. Battery devices increasingly use Thread, and many are Works with Home Assistant certified, including products from Eve, Nuki, and Aqara. It is the forward-looking mesh standard.
Matter is not a radio, it is an interoperability layer that runs over Wi-Fi or Thread. Its promise is cross-brand compatibility, so a device from one maker works cleanly with a hub from another. The Connect ZBT-2 supports Matter, which its predecessor did not, making it the current pick for buyers who want Matter-over-Thread.
A PC or mini server running Home Assistant has Wi-Fi but no Zigbee, Z-Wave, or Thread radio. A USB coordinator dongle adds them. The Home Assistant Connect ZBT-2 is the official option for Zigbee and Thread, with a tuned antenna and a faster chip than the previous ZBT-1, giving a more responsive and stable mesh. The important limitation: it runs one protocol at a time, so you choose Zigbee or Thread per dongle, and you add a separate dongle if you also want Z-Wave. For a wider view of compatible kit, the smart home and appliance range gathers devices that slot into a Home Assistant setup.
Every low-power mesh protocol needs a minimum number of mains-powered nodes to stay healthy. For Zigbee, five to ten mains-powered devices, plugs and light switches are a practical floor before battery sensors become reliably responsive across a whole home. Z-Wave's sub-1GHz signal travels further through walls, with documented ranges of up to 100 metres under ideal conditions outdoors, though dense brick and concrete cut that back. Thread's IPv6-based architecture means each device is directly addressable on your network, which simplifies troubleshooting and eliminates the coordinator overhead you manage with Zigbee or Z-Wave.
Matter has grown into a meaningful ecosystem through 2026. New device releases across lighting, sensors and locks increasingly ship as Matter-certified, and the Home Assistant Connect ZBT-2 handles Matter-over-Thread natively. The practical benefit for a new builder is that a Matter device bought today will work with Home Assistant, Apple Home, Google Home, and most other current platforms, so you are not betting on one ecosystem's longevity. The caveat is that Matter's device catalogue still trails Zigbee's breadth, particularly for budget hardware.
If you run Home Assistant on a PC or mini server, you will need at least one USB coordinator. For Zigbee and Thread the Home Assistant Connect ZBT-2 is the current recommendation, running one protocol at a time with a tuned antenna and a faster chip than its predecessor. For Z-Wave you need a separate USB dongle, since Zigbee and Z-Wave share no hardware. If you want all three active simultaneously, that means two USB sticks, which most small home servers handle without issue.
Begin with one protocol and grow. For most SA builders that means Zigbee first, because the device choice and pricing are the friendliest, plus a coordinator dongle. Add Thread or Z-Wave later as specific devices demand them. Keep your hub central and away from heavy Wi-Fi interference so the mesh stays strong. If you are still assembling the supporting gear, scanning the best-selling accessories is a practical way to find dongles, sensors, and the bits that round out a build.
Zigbee is the usual recommendation for new builders thanks to its very large, affordable device range and mature Home Assistant support. You can add Thread or Z-Wave later for devices that need them.
The Connect ZBT-2 supports both, but only one at a time. You choose Zigbee or Thread for that dongle, and run a second coordinator if you want to operate both simultaneously.
Thread is a low-power wireless mesh, a radio standard. Matter is an interoperability layer that runs over Thread or Wi-Fi to make devices from different brands work together. They often appear together as Matter-over-Thread.
Not necessarily. Z-Wave is useful when a specific device you want is Z-Wave only, or to reduce interference on a busy Wi-Fi band. Otherwise Zigbee plus Thread covers most needs.
Not bad, just suited to mains-powered devices. Wi-Fi draws too much power for long battery life, so for battery sensors and switches a low-power mesh like Zigbee or Thread is the better fit.
Planning a Home Assistant build that mixes Zigbee, Thread, and Matter? Browse compatible kit in the smart home range at Evetech and start your mesh with the right coordinator.
Zigbee is the usual recommendation for new builders thanks to its very large, affordable device range and mature Home Assistant support. You can add Thread or Z-Wave later for devices that need them.
The Connect ZBT-2 supports both, but only one at a time. You choose Zigbee or Thread for that dongle, and run a second coordinator if you want to operate both simultaneously.
Thread is a low-power wireless mesh, a radio standard. Matter is an interoperability layer that runs over Thread or Wi-Fi to make devices from different brands work together. They often appear together as Matter-over-Thread.
Not necessarily. Z-Wave is useful when a specific device you want is Z-Wave only, or to reduce interference on a busy Wi-Fi band. Otherwise Zigbee plus Thread covers most needs.
Not bad, just suited to mains-powered devices. Wi-Fi draws too much power for long battery life, so for battery sensors and switches a low-power mesh like Zigbee or Thread is the better fit.
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