We make a simple relay based box of tricks that routes upto five switches to any one of three output ports. Makes integrating mobility switching and communication aid/ Env controls/ Computer access reasonably easy. Give us a ring - whoever you are? regards, Geoff G.J.Harbach I.Eng MIED IIPEM Clinical Technologist Special Controls Service Manager West Midlands Rehabilitation Centre 91 Oak Tree Lane, Selly Oak Birmingham, West Midlands, B92 6JA Tel 0121 627 1627 Ext. 53238 <PRE>How can this be achieved, who knows?