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Matter / practical details

Check the setup.
Keep the lock.

A guide to what connects, what fits and what the monitor does.

Locksure reports lock state. It cannot lock or unlock a door.

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Connection

Two roles. Check the exact model.

Locksure Matter uses Thread. You need a Matter controller in your chosen platform and a Thread border router. These can be in the same device. The following examples describe manufacturer hardware capabilities, not a completed test of every Locksure firmware/platform combination.

Selected hardware examples, checked 28 September 2026
PlatformExampleCheck
Apple HomeHomePod mini; HomePod 2nd generation; Apple TV 4K 2nd generation; Apple TV 4K 3rd generation Wi-Fi + EthernetThe 3rd-generation Wi-Fi-only Apple TV is different. Apple guidance
Google HomeNest Hub 2nd generationA Nest Mini is not the same device. Google guidance
AlexaEcho 4th generationCheck the exact Echo model. A Thread-capable eero alone does not establish your complete Matter setup. Amazon guidance
SmartThings / Home AssistantA supported Matter controller plus an appropriate Thread border routerConfiguration and versions vary. Ask us to check your proposed setup.

Platforms

The state is the same. The interface is not.

Apple Home, Google Home, Alexa, SmartThings and Home Assistant each present devices differently. Notifications, remote viewing, history, routines and permissions depend on platform configuration and connectivity.

Ask about a specific platform or automation

Physical fit

Check your door against the diagrams.

Thumb Turn uses one monitor inside the door. Key Turn uses two monitors on one key-both-sides door. Start with the diagram for your version, checking the handle/backplate, cylinder and surrounding space. For Key Turn, check both sides of the door.

Thumb Turn fitting diagram showing flat mounting plate, space below the cylinder, barrel protrusion and thumb-turn gap
Thumb Turn — inside only. Open full-size fitting diagram ↗
Key Turn fitting diagram showing flat mounting plate, space below the cylinder and barrel protrusion
Key Turn — check both sides. Open full-size fitting diagram ↗

Look for a flat mounting surface and at least 34 mm of flat space below the cylinder. Also check cylinder protrusion and, for Thumb Turn, clearance for the sensing magnet. It is not a universal fit.

Still unsure after checking?

Use the question form to send your question and a clear photo of the lock, handle and surrounding space. Tell us which side of the door is shown.

Ask Locksure ↗

Pairing

Use the instructions for the shipping firmware.

Add the sensor using your chosen home platform and its required controller/Thread setup. Keep the physical lock manually operable throughout setup.

Request current pairing instructions

Optional features

Magnet and display hub do different jobs.

The £9.99 Open/Close Magnet adds the door's open/closed state. Without it, the monitor still reports lock state.

The £34.99 optional Locksure Matter Hub adds a touchscreen, account sharing, geofence alerts and longer history through the Locksure route. It does not remove the required Matter controller/Thread setup.

LED flashes: cyan means locked, amber means unlocked. These are transient signals, not a permanent status lamp. Third-party apps may use different colours.

Check first. Buy with a clear answer.

Current release information

For instructions or release details for your monitor, ask Locksure using the question form. Include the version shown in your device settings.