The Home Assistant Connect ZBT-2 is the easiest way to build a Zigbee or Thread network — now with even better performance and stability. The precisely tuned, high-performance antenna and the latest-generation MG24 radio chip together provide faster response and a stable connection to connected devices. It is built on the open, second-generation Connect platform, making it well-optimized and aesthetically fitting for the home environment.
Setting up and migrating the ZBT-2 is essentially plug & play: Home Assistant’s built-in wizard guides you through the initial steps, allowing you to start a new Zigbee or Thread network in minutes or migrate your existing one. It directly connects a wide range of Zigbee 3.0 or Matter (Thread) devices to Home Assistant — without separate hubs.
About the Home Assistant / Nabu Casa brand
Home Assistant is a leading open-source smart home platform offering local, cloud-independent control and extremely broad device support. Nabu Casa Connect products (such as the ZBT-2) are developed closely with the HA engineering team, ensuring first-class integration, continuous updates, and long-term support.
Key product features
- Optimized antenna: tuned for the 2.4 GHz Zigbee/Thread band, delivering excellent signal quality and range.
- Faster response: up to four times speed improvement over the first generation, with consistently better device responsiveness.
- Pure performance: updated Silicon Labs MG24 Zigbee/Thread SoC for maximum performance and stability.
- Open platform: 2nd-generation Connect platform — open, powerful, and blends into living spaces.
- Serviceable design: open, source-friendly, without glue or hidden clips; easily accessible pads and pins.
- Plug & Play migration: built-in wizard for easy migration of Zigbee/Thread networks.
- Free network choice: start a new Zigbee or Thread network in minutes.
- Fewer hubs, more order: connects your existing Zigbee, Matter, or Thread devices directly to Home Assistant.
- A world of devices: from proven Zigbee products to the latest Matter devices.
- Power of Home Assistant: broad compatibility on Zigbee and Thread, with OTA updates for major brands.
- Reliability at the core: a device from the team driving Home Assistant development.
- Wide compatibility: ZHA, Zigbee2MQTT, and OpenThread Border Router support.
Smart home protocols and platform compatibility
- Supported protocols: Zigbee 3.0, Thread (to connect Matter over Thread devices).
- Home Assistant integrations: ZHA (Zigbee Home Automation), Zigbee2MQTT, OpenThread Border Router.
- Regions/channels: all Zigbee and Thread regions and 2.4 GHz channels supported.
- OTA updates: OTA updates available from Home Assistant for devices from major manufacturers.
Smart features
- One-step setup: guided onboarding with a wizard.
- Network migration: move existing Zigbee/Thread networks with just a few clicks.
- Local control: cloud-independent, fast, and stable operation within the Home Assistant ecosystem.
Technical specifications
- Model: NC-ZBT-9741
- Certifications: CE, FCC, RCM
- FCC ID: 2A8ZE04
- Origin: China
- System chips (SoC): Silicon Labs MG24 (Zigbee 3.0 & Thread), ESP32-S3 (USB–serial bridge)
- Power / data: USB-C, 5 V DC, 500 mA
- Supported protocols: Zigbee 3.0, Thread
- Frequency range: 2400–2483.5 MHz
- Antenna peak gain: 4.16 dBi
- Transmit power: 10 dBm (EU), 8 dBm (rest of world)
- Radiation pattern: omnidirectional
- Antenna dimensions: Ø 24 mm × 164 mm (height)
- Device dimensions/weight: 83 × 83 × 179 mm, 157 g
- Package dimensions/weight: 227 × 168 × 42 mm, 350 g
- Enclosure material/color: polycarbonate; white and semi-transparent elements
- Operating environment: indoor only; 0–65 °C (antenna: −40–+85 °C); non-condensing humidity
- Installation note: building materials and placement significantly affect wireless range; keep in a dry, non-dusty environment; do not expose to direct sunlight or place near heat sources
- Compatibility (software): Home Assistant ZHA, Zigbee2MQTT, OpenThread Border Router
- In the box: antenna, base, 1.5 m USB cable (USB 2.0/3.0), quick guide
Additional information
| General |
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| Brand | Nabu Casa / Home Assistant |
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| Smart home protocols |
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| More features |
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| Colour | white |
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| Device power supply | 5V DC |
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| Ethernet (RJ-45) | no |
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| Google | Hardware > Power & Electrical Supplies > Home Automation Kits |
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| IP rating | IP20 |
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| MQTT support | Zigbee2MQTT, ZHA |
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| Operating humidity range | 0% – 80% RH |
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| Operating temperature range | 0°C – 65°C |
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| Plug&Play installation | yes |
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| Power supply | DC |
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| Product category | gateway / hub |
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| RF transmitter / receiver | no |
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| Size 1 (cm) | 8,3 |
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| Size 2 (cm) | 8,3 |
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| Size 3 (cm) | 17,9 |
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| Supported protocols | Thread, Zigbee |
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| Thread | yes |
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| Type of the product | gateway / hub |
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| Wi-Fi | no |
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| Zigbee | yes: Zigbee gateway |
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| Z-Wave | no |
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| Dimensions | 8,3 × 8,3 × 17,9 cm |
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