Onvis Smart Plug S4
The Onvis Smart Plug S4 is an on/off plug-in unit from Onvis, part number SA40, that lets you switch the appliance plugged into it remotely. It is certified to Matter specification version 1.4, with Thread and Bluetooth as its networks, and the certification was granted on 11 September 2025. Software versions 1.4.0 and 1.1.0-315 are listed for it.
Software certified
