... CCC,ROHS,UL,TUV,ISO9001 AD22(LED)series of indicator is equally used LED shining chip as light source ... ,E,G,H,double color lamp, position indicator,shining buzzer and mini short indicator,as well as design shape ... resistance≥2MΩ(3)Voltage wave allowed by AC indicator±20%(4)Continual working life≥30000h(5)Brightness ... prices and efficient services to you! LED indicator light/signal lamp 220V AD22C-14D