The Matter smart home standard is a shared, IP-based protocol that lets lights, locks, sensors and other connected devices from different brands work together without a separate hub for each maker. It is managed by the Connectivity Standards Alliance.
Matter is one of several things worth understanding before you fill a house with connected gadgets, and the gadget buying guide covers the wider checklist of specs and longevity.
What Matter is and why it exists
Before Matter, a smart plug built for one voice assistant often refused to talk to another. Each ecosystem had its own setup app, its own pairing steps and its own idea of what a “light” or a “lock” could do. Shoppers had to read the back of every box to find out whether a product would work with the phone or speaker they already owned.
The Connectivity Standards Alliance describes Matter as “a unifying, IP-based connectivity protocol built on proven technologies”. In plain terms, it is a common language that devices use to describe themselves and accept commands, running on ordinary internet-protocol networking rather than a brand-specific scheme. The alliance states the goal directly: “Devices from multiple brands work natively together.”
The effort began in December 2019 as the Project Connected Home over IP working group, according to the standard’s public history. It later became Matter, and version 1.0 of the specification was published on 4 October 2022.
How Matter devices connect
Matter itself is an application layer. It sits on top of network technologies that already exist, and the alliance has said the specification uses Bluetooth Low Energy for commissioning, which is the step where a new device is first added to a home. After that, the device talks over the home network.
The two main network types are Wi-Fi and Thread. Wi-Fi devices join the router you already have. They suit products that are plugged into the wall and can afford the power demands of a wireless radio, such as plugs, bulbs and cameras.
Thread is a low-power wireless network built for small battery devices. The Thread Group says it is “Based on the power-efficient IEEE 802.15.4 MAC/PHY”, that it is an “OPEN IPv6 BASED PROTOCOL”, and that it “Provides security at the network layer”. A Thread network usually needs a Thread border router, which links the low-power devices to the rest of your home network.
Wi-Fi-based Matter devices benefit from a stable router, and in a larger home that can mean a better network layout. The mesh wifi system guide explains how mesh wifi system hardware spreads coverage, which matters for any product that lives on your Wi-Fi.
- Matter is an IP-based protocol: IP-based
- Interoperability goal: brands work together
- Local connectivity: local
- Commissioning over Bluetooth LE: Bluetooth LE
- Apple Home supported Matter types: list
Local control and privacy
One selling point of the standard is local operation. The alliance highlights “Consistent and responsive local connectivity.” A widely cited description of the specification adds that Matter-certified products are engineered to operate locally and do not depend on an internet connection for their core functions. In practice, that means a light switch and a bulb can keep working together if your internet drops, provided the controller in your home is still running.
This does not make every feature local. The standard sets the way devices are paired and controlled; what a brand adds around it is a separate matter.
Apple’s documentation shows how access is handled on that platform. Apps must request access to add an accessory to your home, which keeps the user in control of which software can manage which device. Matter accessories paired with one app can then be added to others that support the standard, which is the multi-ecosystem idea in action.
What Matter can control today
The list of device categories has grown with each release. Apple’s support page lists what its Home app currently handles: air conditioners, bridges, lights, locks, outlets, switches, thermostats, blinds and shades, and sensors. Other platforms publish their own lists, and support for a device type can differ between ecosystems even when both claim Matter compatibility.
The specification itself keeps expanding. Version 1.4 was released on 7 November 2024 with an expanded focus on electricity-related areas, including batteries, solar systems, home routers, water heaters and heat pumps. Version 1.5 followed on 20 November 2025 and added support for cameras, soil moisture sensors and energy management features.
Because platforms adopt new device types on their own schedules, a product certified for a newer version may not show every feature in every app straight away. Checking the platform’s current support list is more reliable than assuming.
Setting up a Matter device
Setup typically starts with a code printed on the device or its packaging. You scan it with a phone app or a hub’s app, the device is commissioned over Bluetooth, and it then joins the home network. Apple states that on a phone running iOS 18 or later you can add and control Matter accessories from the Home app without a home hub.
Thread-based accessories are different. Apple notes that Thread-based accessories require a Thread-enabled home hub, or a compatible third-party Thread border router. If you buy Thread sensors without one, they will not connect.
Many Matter sensors and remotes run on small batteries, so long-term upkeep matters. The lithium ion battery care guide explains how rechargeable cells age, which is relevant to rechargeable smart-home gear such as cameras and door sensors.
Certification and what the logo means
A product that carries the Matter mark has passed the alliance’s certification programme. Google’s developer documentation notes that starting in 2026, all Matter integration and testing will require the Alliance Interop Test, showing that testing requirements keep tightening as the standard matures.
Certification is a statement about interoperability, not about quality. A certified bulb can still be dim, and a certified lock can still have a clumsy app. The mark answers one question: will this product speak the same protocol as the controller I already have.
Limits to keep in mind
Matter does not make older devices disappear. Many homes will mix Matter products with older Zigbee, Z-Wave or Wi-Fi gear that only works through a bridge. Bridges allow non-Matter devices to appear inside a Matter system, and Apple’s list includes bridges as a supported accessory type for this reason.
Not every feature of a product is exposed through the standard. Brand-specific extras, such as special lighting effects, may stay inside the maker’s own app. Treat Matter as the shared baseline that guarantees the basics, with extras on top.
Finally, the controllers matter as much as the devices. Matter needs at least one controller in the home, such as a phone ecosystem’s hub or speaker, and the quality of automations depends heavily on that platform.
Frequently asked questions
Is Matter a product or a standard?
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It is a standard. The Connectivity Standards Alliance publishes it and certifies products against it, but it does not sell a hub or a device.
Do Matter devices work without the internet?
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Core functions are designed to work locally. Cloud features such as remote access are provided by the individual platform and may need a connection.
Does Matter replace Wi-Fi?
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No. Matter runs over existing networks such as Wi-Fi and Thread, and uses Bluetooth Low Energy to add a new device.
Do I need a hub for Matter?
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It depends on the device. Wi-Fi products may work with a phone alone, while Thread products need a Thread border router, as Apple’s documentation states.
