On Sat, Jul 19, 2014 at 8:12 PM, pc wrote: > What about reed relays........, bundle eight with heatshrink tube and wra= p > some wire coil round the lot > Does need eight per cable though.... I had always envisioned this as a small box, so I'd probably be putting them in a shielded enclosure. Josh --=20 A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .