Either the switches, or, usually easier, the bulbs. As sibling said, Zigbee, but there is also Z-Wave (z-Wave is bigger in the USA, stricter. Zigbee, bigger in

Either the switches, or, usually easier, the bulbs. As sibling said, Zigbee, but there is also Z-Wave (z-Wave is bigger in the USA, stricter. Zigbee, bigger in Europe, is more open, but you can get devices that suck in some way if you do no research). There is some new thing that’s related, Thread/Matter something, but I didn’t look into that yet.