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๐ก COMPANION ROTARY DIMMER โ Works only with RD1 or RD1-Pro to extend smart rotary dimming across your home. ๐ TRUE 2-WAY ROTARY CONTROL โ Adds genuine multi-point dimming, unlike push-button or retractive switches. โ UP TO 3-WAY SETUPS โ Pair up to two RD1C units with one RD1/RD1-Pro for staircases, landings, and open spaces. โก EASY INSTALLATION, NO NEUTRAL โ Fits UK back boxes, simple 2-wire wiring, perfect for retrofits and upgrades. ๐จ MATCHING DESIGN & FEEL โ Same rotary knob and faceplate style as your RD1 for a seamless finish.