This listing has moved
It was merged into TP-Link Tapo S505D Smart Dimmer Switch, Single Pole, Neutral Required, the same product. That page has the retailer options and certification details.
CSA Matter certified (certificate CSA2519DMAT45295-24). Uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller.
At a glance: Matter certified: Yes, Mar 22, 2025 · Connectivity: Wi-Fi · Platforms: Amazon Alexa (listed in its catalog record, unverified) · Thread border router: Not needed (uses Wi-Fi)