All dimmers are sold with plain dimmer knob as standard. Diamond knurled dimmer must be purchased separately.
Our 2 Gang Multi Location Seconday Dimmer switch from the Seville Range in our Gloss White finish enables dimming from 1, 2 or 3 locations. Where lights are controlled from 2 or 3 positions, use 1 primary dimmer with 1 or 2 secondary dimmers.