specialized in exporting best price and efficient services Certified by CE,CCC,ROHS,UL,TUV,ISO9001 AD22(LED)series of ... , small volume and light weight.AD22 indicators are produced by our factory enjoying by lots of clients.In order to fit in with ... calue),1min.(2)Insulated resistance≥2MΩ(3)Voltage wave allowed by AC indicator±20%(4)Continual working life≥30000h(5)Brightness ...