This is a 4G 2 way leading edge dimmer with a 4 x 60-400W rating;With push on/ push off control;For controlling mains lighting add up the wattages of the bulbs you wish to dim;For low voltage lighting add up the rating of the transformers you wish to dim for compatibility

• Knightsbridge SF2164PC 60 - 400 W 4-Gang 2-Way Screwless Dimmer - Polished Chrome
• Polished Chrome
• Multi

Knightsbridge SF2164PC 60 - 400 W 4-Gang 2-Way Screwless Dimmer - Polished ChromeML Accessories