Use the first ecosystem's multi-admin or sharing flow to generate a fresh setup code for the second ecosystem. The code printed on the device may not be the correct code after commissioning. First, confirm a working primary fabric, compatible hub/controller, same local network and administrator access in both ecosystems.
What this covers
- A Matter device and two ecosystems that both support that device type and Matter version
What it does not cover
Try in this order
0 of 8 completedEstablish the exact starting state
ReversibleConfirm a working primary fabric, compatible hub/controller, same local network and administrator access in both ecosystems.
Separate the fault or decision boundary
ReversibleCheck device-type support and Thread-border-router requirements in the destination ecosystem before removing anything.
Apply the narrowest correction
ReversibleOpen the primary ecosystem's sharing or multi-admin flow and enter the newly generated code in the destination app.
Confirm the first ecosystem is working and you are its admin
ReversibleMake sure the device works in the first app, that the controller and hub are online on the same local network, and that you are an administrator. The sharing feature is not available to a guest user.
Check that the second ecosystem supports the device
ReversibleLook at the second ecosystem's supported device types and Thread border-router needs, since not every ecosystem supports every kind of device. Have that hub or speaker ready and updated.
Generate a fresh code in the first app and enter it in the second
ReversibleIn the first app, open the device's sharing or multi-admin option to create a new setup code, then enter it in the second app. Do not use the code printed on the device, and do not remove the device from the first system.
Start from the device's existing ecosystem, not from scratch
ReversibleOpen the app that already controls the device and look for an option to share or link it to another ecosystem.
Verify before escalating
ReversibleControl the device from both ecosystems and test automations without deleting it from the first.
CSA
What multi-admin means for a device that is already set up
Multi-admin is the Matter feature that lets one device be controlled from more than one platform at once.
- The definition
- The Connectivity Standards Alliance says multi-admin lets users connect their Matter devices to multiple platforms, apps or other control points so they can control them where and how they choose.
- No single controller
- Matter devices can work with any of these at the same time without requiring users to choose a single controller, platform or app, which Matter calls an Administrative Service.
- Why it exists
- The CSA describes it as a core feature for reducing smart-home fragmentation and giving users flexibility in how they configure their home.
Stop boundary
When this stops being a self-service repair
- !Do not factory-reset the device to add it to a second ecosystem; use the sharing flow so you keep your first setup and automations.
Evidence ledger
Sources behind this answer
Exact questions
Common questions about “Add one Matter device to a second smart-home ecosystem”
Can one Matter device be in two ecosystems at once?+
Yes, using multi-admin sharing. Each ecosystem controls the device, and you do not need to reset it.
Why doesn't the printed code work for the second app?+
After the first setup, the device only accepts codes generated by the ecosystem that owns it, so make a new one.
Will I lose my automations?+
No, as long as you share the device rather than remove it and set it up again.
Do both ecosystems need to be on the same network?+
Yes, both need to reach the device on the local network, and Thread devices need a border router.
Do I have to pick Apple, Google or Amazon?+
Not with Matter. The CSA says devices can work with several controllers at the same time without requiring a single platform.
Why does the printed code not work the second time?+
The printed code is for the first pairing. Once used, a new sharing code must be created from an existing controller.
Do all devices support multi-admin?+
Most Matter devices do, but check the app. Some features may be limited to one ecosystem.