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Light switch advice
(lemmy.world)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
If you're in North America, you can source Leviton wall switches. They're UL-listed. They have ZigBee and Z-wave versions. They have plain switch as well as dimmer versions. Once you have radio control over the light fixtures via the switches, you can add battery powered radio buttons that look like light switches wherever you like and make them toggle the Levitons. This assumes Home Assistant availability. If you don't have Home Assistant and you just want to solve this, Lutron has an equivalent solution with their own smart dimmers along with their own remote buttons.