NIMTEK US/AU Standard Touch Control Wall Light Switch with Crystal Glass Panel and Back LED Indicator (Black, 4gang 1way) Smart home touch control wall light switch. Suit for AC 110-250V/50-60Hz Luxury glass panel, combine wall switch with fashion, crystal great texture. Perfect flat plate, smooth gorgeous. Exquisite craftwork, well polished, luxurious experience. Simple surface, extraordinary mechanism. Excellent quality, both appearance and built-in are impeccable. Capacitive touch sense, sensitive touch control, feeling like smart cell phone touch. Damp-proof, available for humid operation. Built-in Microchip intelligence chip. Non-discoloring, always keep new as time going.