DIN-Rail Mount Dimmer 4ch 3A /per ch with scene controller with Overheat, Overload, Surge Protection. Single phase both 220/110 VAC, 50-60Hz (Green operated supplied by 24VAC/30mA) Small and elegant with labeling place, life LED indicator, broadcast address button and Momentary channel button. Can be used in any location that require energy saving, intelligent control such as apartment, Villa, Offices, Restaurant, Hotel rooms.