Varilight V-Pro High Power Series for either 1 or 2 Way circuits, 0-300 Watt Push On/Off Rotary LED Trailing Edge Power Grid Dimmer for Varilight Power Grid Plates, for a max 20 most good quality LEDs. The dimmer has special software with the ability to adjust the minimum brightness, and change the driving mode to Leading Edge. Range: Power Grid Finish: White : V-Pro High Power Dimmer Insert/Knob Colour: White Knob Dimensions: 54x26x26mm Faceplate Depth: N/A Product Weight: 170g Fixing Centres: N/A Recommended Back Box Depth: 35mm Operating Voltage: 220/250V AC Maximum Load Rating: LED: 300W (Halogen = 100 watt, Mixed Loads = 100 watt) Maximum Current Rating: 2.2A Terminal (Live) Diameter: 3.2mm; Capacity: 3 x 1.5mm Intended Applications: Indoor Use Only. Domestic lighting circuits including many dimmable LEDs. Safety Advice: Not suitable for use with non-dimmable fluorescent bulbs and tubes, wire-wound or toroidal transformers or electric motors. Do not overload. Product Must Be Earthed. Applicable Safety Standard: BS EN 60669-2-1