Easily transport contact closures from room to room

Have you ever needed to get a bunch of relay or switch contacts from one room to another without using a mess of wires? Now you can move contacts around anywhere using a standard serial cable or even just a standard balanced audio cable and a couple of Db-9 connectors. The CircuitWerkes Transcon-16 is a bi-directional contact transporter that uses standard serial communications which can be routed over any three conductor cable. One Transcon-16 is required at each end of the cable. Each unit has 16 optically-isolated inputs and sixteen relay outputs on each device. Whenever one of the inputs is grounded, the corresponding relay closes on the second unit. Serial data rates can be switched from 9600b to 1200b for noisy/rugged environments or extremely long runs. Inputs and outputs appear on standard D-25 connectors.