Insteon has no cloud dependency and has been producing hardware compatible with the ones sold today since 2005, and it used to be backwards compatible with X10, which is from 1975. They use powerline and RF transmission, and interface with computers or hub devices usually via a transceiver.
I would actually recommend a more open standard today, such as Z-Wave or ZigBee, but the point is, plenty of IoT hardware is long-lived, it just isn't as trendy as what's marketed by Amazon or Google.