Home Assistant Connect ZBT-2
The Home Assistant Connect ZBT-2 is the official Zigbee coordinator and Thread border router from Nabu Casa — the team behind Home Assistant. Powered by the Silicon Labs MG24 chip and featuring an external antenna for maximum range, it’s the most capable USB radio adapter available for Home Assistant. Whether you’re starting a new smart home network or migrating from an existing hub, setup takes minutes with Home Assistant’s built-in wizard.
At a Glance
| Protocols | Zigbee 3.0, Matter over Thread |
| Chip | Silicon Labs MG24 (Zigbee/Thread) + ESP32-S3 (USB bridge) |
| Antenna | External antenna — upgradeable for extended range |
| Compatibility | ZHA, Zigbee2MQTT, OpenThread Border Router |
| Connection | USB 2.0/3.0 (4.9 ft cable included) |
| Supported Regions | All Zigbee and Thread regions, 2.4 GHz channels |
| OTA Updates | Yes — major brands supported |
Key Features
- OPTIMIZED ANTENNA – Optimized External Antenna —
- providing the best possible Zigbee and Thread connection, with the option to upgrade to a higher-gain antenna for whole-home coverage.
- MORE RESPONSIVE – 4× faster than the first-generation adapter, with consistently improved device responsiveness across your network.
- PLUG AND PLAY – migrate your existing Zigbee or Thread network with Home Assistant’s built-in wizard, or start a new network from scratch in minutes.
- OPEN PLATFORM – unlocked, open source, and easy to open with accessible pads and pins. Built on the 2nd-generation Connect platform for maximum flexibility.
- WIDE COMPATIBILITY – works with ZHA, Zigbee2MQTT, and OpenThread Border Router. Supports hundreds of devices from Aqara, IKEA, Sonoff, Philips Hue, and more.
- RELIABLE TO THE CORE – built and supported by the Nabu Casa team driving Home Assistant development forward, with OTA firmware updates for major device brands.
Will It Work With My Setup?
The ZBT-2 works with any Home Assistant installation — Home Assistant OS, Supervised, Container, or Core. It connects via USB to any device running Home Assistant, including:
- Home Assistant Green (plug into the USB port)
- Home Assistant Yellow (via USB-A port)
- Raspberry Pi 4/5
- Intel NUC and other x86 devices
- Any Linux/Windows/macOS system running Home Assistant Container or Core
Complete Your Setup
Pair the ZBT-2 with the Home Assistant Connect ZWA-2 to add both Zigbee and Z-Wave 800 support to your Home Assistant instance simultaneously — no additional hub or bridge required.
What’s in the Box
- 1 x Home Assistant Connect ZBT-2
- 1 x External Antenna
- 1 x Base
- 1 x 4.9 ft USB Cable (USB 2.0/3.0)
- 1 x Quickstart Guide
Carter Fritsch (verified owner) –
Like its predecessor, the ZBT-2 does exactly what it’s supposed to without complication or frustration.
TLDR: Buy.
TL: I purchased this to use as my Thread base radio, alongside the ZBT-1 as my Zigbee coordinator, both on my HA OS NUC. The device is instantly recognized by HA & walks you through the installation of the OTBR & OHF Matter Server Apps, finishing shortly thereafter.
As I don’t use Google Play Services, it did take some time to figure out how to commission the 4 Thread nodes (2 Bulbs, 2 Remotes; All IKEA) I started with manually. Luckily, the native Bluetooth-based commissioning feature in HA had just landed in 2026.7, and after enabling it was quickly able to get them added, with firmware updates & automations finished not long after that. I’ve yet to experience any disconnects or interference (Though I did set the thread channel to 26 to avoid WiFi Overlap), and I look forward to the Thread/Matter ecosystem being built out in the coming years with a safe, secure, *private* base station ready to take on a growing mesh.
As always, shipping was quick & clean. Worth it!