Dimmer 120 V~ 60 Hz for: 40-500 W incandescent lamps, 40-300 VA electronic transfomers, 10-200 W CFL lamps, 3-200 W LED lamps and LED electronic transfomers, control with built-in push button or from NO peripheral push buttons, control and regulation by rotary potentiometer, MASTER function for 19137.120, minimum power control, visible in darkness, white. Not for Isoset enclosures