... wall with the plastic plug and screws. Wire Connection:WG26/34 RS485 RS232Red: DC 9V- ... 3. The wire connects reader to controller, advise use 8 cores stranded twisted pair cable(among them ... , three strands are spare, if no need reader show illegal card s by sound and light, LED wire ... can not be used, data wire Data1 Data0 are twisted pair would be better, ...