Shelly 1 is a miniature WiFi switch with firmware for control within the Apple HomeKit, which, thanks to its size, can easily be installed under a switch or socket in a deeper enclosure.
Adding Shelly to HomeKit to make a dumb switch smart
Shelly-Geräte in HomeKit einbinden: So einfach gehts
Shelly 1 not recognized in Apple Home App? · Issue #91 · mongoose-os-apps/ shelly-homekit · GitHub
Compatiblidad del Shelly con Apple HomeKit: firmwares - Carlos Sahuquillo
Shelly Plus 1 - Relay Switch 12V/24V-60V DC / 240VAC WiFi 16A - Android / iOS Botland - Robotic Shop
Installing HomeKit firmware on Shelly1
Shelly 1 for Apple HomeKit
Connecting the Shelly 1 to an ET Systems gate motor for Apple HomeKit control - vxlabs
Shelly 1 Compatibile Apple HomeKit Relè Switch Interruttore Smart WiFi