... is equally used LED shining chip as light source with long life,low consumption, small volume and light weight.AD22 ... developAD22-22B,C,D,E,G,H,double color lamp, position indicator,shining buzzer and mini short indicator,as ... valid calue),1min.(2)Insulated resistance≥2MΩ(3)Voltage wave allowed by AC indicator±20%(4)Continual working life ... services to you! NEW LED Indicator Light/signal lamp AD22C-16D