Wall switches that replace your regular ones and let you control lights and curtains from your phone: Tuya smart switches from 1 to 4 gang, 16A and 20A versions, curtain switches, Spark Electric deluxe switches with aluminum frames, and Sonoff T5 and T6 touch switches with the R5 scene controller.

Before ordering, check your wall box type (US or UK size) and whether a neutral wire is available at the switch.