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ZOOZ Z-Wave Plus Dimmer Switch (WHITE) with Simple 3-way & 4-way only $ 25.95 at The Smartest House
https://www.thesmartesthouse.com/…-way-4-way

https://www.thesmartesthouse.com/…-way-4-way

Non Dimmer included too:
https://www.thesmartesthouse.com/…-way-4-way