Home Assistant Connect ZBT-2 - Smart adapter for Zigbee and Thread

Home Assistant Connect ZBT-2 is the simplest and most reliable way to add Zigbee or Thread networks directly into Home Assistant.
With an optimised antenna, an improved architecture and a new generation chipset, the adapter offers excellent stability, extended coverage and up to 4 times the communication speed of the first generation.

The ZBT-2 is built on the fully open and easily customisable Connect Gen 2 platform. It is ideal for both novice users and advanced enthusiasts who want full access to hardware and software.

It connects directly via USB-C, includes detachable omnidirectional antenna, and offers plug-and-play setup via Home Assistant, with no complicated setup.

Key features

• Universal Zigbee 3.0 and Thread compatibility for direct integration with Home Assistant.

• High-gain optimised antenna for stable connection and extended range.

• Speed improved 4x over previous generation.

• Next generation MG24 chip for superior Zigbee and Thread performance.

• Open hardware - open source, easy to open and modify, no clips or glue.

• Plug-and-play, immediate setup with the included Home Assistant wizard.

• Wide compatibility: ZHA, Zigbee2MQTT, OpenThread Border Router.

• Modern design, white and semi-transparent, can be integrated in any room.

Technical Specifications

• Model: NC-ZBT-9741

• Manufacturer: Nabu Casa, Inc.

• Chipset: Silicon Labs MG24 (Zigbee/Thread) + ESP32-S3 (USB-serial bridge)

• Power supply: USB-C, 5V DC, 500 mA

• Supported protocols: Zigbee 3.0, Thread

• USB connectivity: USB 2.0 and USB 3.0

• Radio frequency: 2400-2483.5 MHz

• Transmission power: 10 dBm (Europe) / 8 dBm (rest of the world)

• Antenna gain: 4.16 dBi

• Coverage range: depending on structure and positioning

• Antenna type: omnidirectional, detachable

• Antenna dimensions: Ø24 mm, 164 mm height

• Housing material: polycarbonate

• Colour: white and semi-transparent

• Device dimensions: 83 × 83 × 179 mm

• Weight: 157 g (device), 350 g (with packaging)

• Certifications: CE, FCC, RCM

• Origin: China

• Operating temperature: 0 °C - 65 °C (antenna -40 °C - +85 °C)

• Utilisation: indoor only

User benefits

• Add Zigbee and Thread support directly in Home Assistant

• Fast response and very good stability in dense networks

• Ideal for ZHA, Zigbee2MQTT and OpenThread

• Open hardware, ideal for advanced modifications

• Easy configuration and migration without complex settings

• Elegant design and high temperature resistant material