SEISensors

SEI Water Leak Sensor

CSA CertifiedCertification record

Works with: Matter certified, 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.
Network & hub: Thread; needs a Thread border router as well as your platform’s Matter controller

Certification record

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

Certificate ID: CSA262FCMAT52552-24
Certified: May 13, 2026
Maker: SEI
Device type: Sensors
Connection: Thread, Bluetooth
Firmware: 1.0.0.5

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Matter 1.4.2 certificate

Its certificate, CSA262FCMAT52552-24, is for Matter 1.4.2, certified May 13, 2026. The Matter version is the specification version on the certificate's ledger record.

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

What Matter 1.4.2 added, and which devices use it →

SEI Water Leak Sensor is a smart sensor. It is listed as a Thread device, so Matter setup needs a Thread border router such as a HomePod mini or a Google Nest Hub (2nd gen). It is CSA Matter certified (May 13, 2026), 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.

ThreadBluetooth