Home Assistant Connect ZBT-2

The Home Assistant Connect ZBT-2 makes it straightforward to get started with Zigbee or Thread with Home Assistant, and is fully compatible with Raspberry Pi and other Home Assistant-supported Linux devices such as the Home Assistant Green.

Its improved antenna and updated chip offer reliable performance and stable operation for your home automation system. Built on the second-generation Connect platform, it’s designed to be flexible and unobtrusive in the home.

Setup and migration are simple, letting you bring Zigbee or Matter devices into Home Assistant without fuss. Connect and manage your devices directly, with everything handled through Home Assistant.

Be sure to check out our dedicated Home Automation section for everything else you might need for your smart home project.

Key Features

📡 Optimised antenna – provides a strong, reliable connection to Zigbee or Thread devices.

⚡ More responsive – around 4x faster than the first-generation adapter, improving device response times.

🚀 Pure performance – the updated MG24 Zigbee/Thread chip offers excellent performance and stable operation.

🆕 Open platform – the second-generation Connect platform is more open, flexible, and designed to fit neatly into the home.

🛠️ Built to be tinkered with – fully unlocked and open source, with an easy-to-open case and accessible pads and pins.

🔌 Plug and play – migrate your Zigbee or Thread network using Home Assistant’s built-in wizard.

🌐 Choose your network – start a new Zigbee or Thread network in a few minutes.

🏠 Cut smart home hub clutter – connect your Zigbee, Matter, or Thread devices directly to Home Assistant.

🌎 A world of devices – works with everything from long-established Zigbee products to modern Matter devices.

💪 All the power of Home Assistant – wide Zigbee and Thread compatibility, plus OTA updates for major brands.

✅ Reliable to the core – developed by the team behind Home Assistant.

🔄 Wide compatibility – works with ZHA, Zigbee2MQTT, and OpenThread Border Router.

Specifications

SoCs	Silicon Labs MG24, ESP32-S3 (USB–serial bridge)
Power and data	USB-C, 5V DC, 500mA
Supported protocols	Zigbee 3.0, Thread
Frequency range	2400–2483.5 MHz
Peak gain	4.16 dBi
Transmit power	10 dBm (Europe), 8 dBm (rest of world)
Radiation pattern	Omnidirectional
Antenna dimensions	24 mm diameter, 164 mm height
Device dimensions	83 × 83 × 179 mm
Device weight	157 g
Enclosure material	Polycarbonate plastic
Enclosure colour	White and semi-transparent
Operating temperature	0°C to 65°C (antenna: –40°C to +85°C)
Humidity	Non-condensing
Environment	Indoor use only; avoid dust, heat sources, and direct sunlight

Resources

• Home Assistant Connect ZBT-2 Quick Start Guide
• ZBT-2 Documentation
• ZBT-2 launch livestream
• ZBT-2 FAQ
• ZBT-2 Datasheet
• Product number: Nabu Casa NC-ZBT-9741
• EAN: 0860011789741

Package Contents

• 1x Home Assistant Connect ZBT-2 antenna
• 1x Home Assistant Connect ZBT-2 base
• 1x 1.5m USB-A to USB-C cable
• 1x Printed Quickstart guide