What’s MatterSensors

What’s Matter Smoke Sensor

CSA CertifiedCertification record

Works with: Matter certified as a smoke CO alarm, so it can work with Matter apps such as Apple Home, Google Home, Alexa and SmartThings when the app supports its device type; supported features vary by app. The maker hasn’t named platforms on a page we hold.

Certification record

A Matter certification on file for this model. There is no product photo or store link for it yet.

Certificate ID: CSA25F7CMAT48846-24
Maker: What’s Matter
Certificate holder: What’s Matter Inc.
Device type: Sensors
Connection: Thread, Wi-Fi

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Matter 1.4 certificate

Its certificate, CSA25F7CMAT48846-24, is for Matter 1.4, certified Dec 8, 2025. The Matter version is the specification version on the certificate's ledger record.

Source: CSA Distributed Compliance Ledger, read Oct 19, 2026.

What Matter 1.4 added, and which devices use it →

Matter-enabled smoke sensor for early fire warnings

ThreadWi-Fi