Home Assistant Connect ZBT-2: what it works with

Nabu Casa · model Home Assistant Connect ZBT-2 · For the US and Canada (US, CA, EU, UK, AU)

• Matter Unconfirmed
• Apple Home Unconfirmed
• Google Home Unconfirmed
• Amazon Alexa Unconfirmed
• SmartThings Unconfirmed
• Home Assistant Yes

Replacing the discontinued ZBT-1, the ZBT-2 is a USB radio with a Silicon Labs MG24 chip. You pick Zigbee 3.0 (ZHA or Zigbee2MQTT) or Thread (OpenThread Border Router) during setup, one at a time per adapter. It is official Home Assistant hardware, and Home Assistant is the only ecosystem confirmed.

Checked against 5 sources on Oct 12, 2026

Ecosystem compatibility

“Via Matter” means you add it with that platform's Matter controller instead of a brand skill or app. “Unconfirmed” means we couldn't find an official source either way. How we verify.

Specs that matter for setup

Radio

Zigbee, Thread^[1],[2]

Hub required

Unconfirmed

Local control

Unconfirmed

Type

USB dongle^[1],[2]

Connects devices over

Zigbee, Thread^[1],[2]

Matter bridge

Unconfirmed

Thread border router

Yes^[1],[2],[3]

Max devices

Unconfirmed

• Radio: Silicon Labs MG24 at 2.4 GHz with an ESP32-S3 as USB bridge. Runs Zigbee 3.0 or Thread firmware, not both; no Bluetooth or Z-Wave. No model number is stated. Sold in North America, Europe (incl. UK retailers), Australia and Asia.
• Hub: Not confirmed by an official source.
• Local control: Home Assistant says Zigbee and Thread give devices a local connection, but no official page states local control for the adapter in so many words.
• Type: Successor to the ZBT-1; it replaced that model, which is discontinued.
• Connects devices over: One at a time: you pick Zigbee or Thread during setup and can switch later.
• Matter bridge: Not a bridge; Matter devices on Thread are reached through Home Assistant's Matter integration.
• Thread border router: With Thread firmware and the OpenThread Border Router in Home Assistant; the maker says it cannot be a standalone border router on its own.
• Max devices: Not stated by the maker.

Before you buy

• It runs Zigbee or Thread, never both on one adapter.
• Alone it cannot act as a Thread border router; that needs the OpenThread Border Router in Home Assistant.
• ZHA allows one instance, so two ZBT-2 adapters cannot both run under ZHA.

Quick answers

Does the Home Assistant Connect ZBT-2 work with Apple Home?

Not confirmed. We couldn't find an official source either way. Reachable only through Home Assistant software, which is not a hub; not confirmed.

Does the Home Assistant Connect ZBT-2 work with Google Home?

Not confirmed. We couldn't find an official source either way. Reachable only through Home Assistant software; not confirmed.

Does the Home Assistant Connect ZBT-2 work with Amazon Alexa?

Not confirmed. We couldn't find an official source either way. Reachable only through Home Assistant software; not confirmed.

Does the Home Assistant Connect ZBT-2 work with SmartThings?

Not confirmed. We couldn't find an official source either way. Not confirmed.

Does the Home Assistant Connect ZBT-2 work with Home Assistant?

Yes. The Home Assistant Connect ZBT-2 works with Home Assistant directly. Official Home Assistant hardware and its recommended Zigbee adapter: Zigbee through ZHA or Zigbee2MQTT, Thread through the OpenThread Border Router. More smart home hubs for Home Assistant

Sources

1. Home Assistant Connect ZBT-2 — Home Assistant manufacturer · accessed Oct 12, 2026
2. About Home Assistant Connect ZBT-2 — Nabu Casa manufacturer · accessed Oct 12, 2026
3. The best gets better - Home Assistant Connect ZBT-2 — Home Assistant manufacturer · accessed Oct 12, 2026
4. Zigbee Home Automation - Home Assistant — Home Assistant ecosystem · accessed Oct 12, 2026
5. Thread - Home Assistant — Home Assistant ecosystem · accessed Oct 12, 2026

Official product page: www.home-assistant.io