... indicator is equally used LED shining chip as light source with long life,low consumption, small volume and light weight.AD22 indicators ... ,D,E,G,H,double color lamp, position indicator,shining buzzer and mini short indicator,as well as design shape of AD22-22G ... .(2)Insulated resistance≥2MΩ(3)Voltage wave allowed by AC indicator±20%(4)Continual working life≥30000h(5)Brightness≥60cd/m2 ...