Does the Shelly Power Strip 4 Gen4 work with HomeKit, Alexa, and Google Home?
The Shelly Power Strip 4 Gen4 measures power on every one of its four sockets.
It has Wi-Fi 6, Bluetooth, Zigbee and Matter. It suits Home Assistant users, with native support through Zigbee. Google Home, Alexa and SmartThings users reach it through an integration (the maker's cloud).
Limited: Ships in Matter over Wi-Fi mode (blue flashing LED rings when pairing); Zigbee use needs a switch to Zigbee mode first; Sockets turn off after a reboot or power loss by default; each socket's power-on behavior can be set to restore its previous state[2]
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.