Dimmer, supply voltage 230 V~ 50 Hz, for: 40-500 W incandescent lamps, 40-500 VA ferromagnetic transformers and 40-300 VA inductive response electronic transformers, control and regulation with built-in touch sensor or from peripheral NO push buttons, MASTER function, MOSFET+TRIAC technology, visible in darkness, grey. Not suitable for installation in Isoset enclosures