... ,CCC,ROHS,UL,TUV,ISO9001 AD22(LED)series of indicator is equally used LED shining chip as light source with long life,low ... of international standard lampshade. Main technical target: (1)Voltage of working frequency:205kV(AC valid calue),1min.(2)Insulated resistance≥2M ... Ω(3)Voltage wave allowed by AC indicator±20%(4)Continual working life≥30000h(5)Brightness≥60cd/m2(6)Index of leakage ...