You can control up to three rooms or zones with separate Tap selector buttons. The Tap selector switch is available in black or white. Turn the switch knob to dim and brighten the lights. Mount it on the wall, place it on a magnetic surface or use it as a remote control. Control up to three Rooms or a Zone with each individual button of the Tap dial switch, available in black or white. Turn the dial to dim and brighten the lights. Mount it to the wall, place it on a magnetic surface, or use it as a remote control.