An easy controller, it features standard size of wall recessed switch box, perfect for dimming light in households, hotels, restaurants etc 1 Channel ( Dimmer 1, Dimmer 2 ) DMX output can control one group of 1-Ch Led lighting fixtures Two knobs for brightness adjustment Buttons ( M1 & M2 ), each button can save one scene for instant lighting effect Standby button for blackout         Power input: DC 12V Size: 83.8 x 83.4 x 40mm Weight: 0.5 kg