Made in USA Flag All board products Proudly made in USA!

Manufacturer of computer controlled relay, I/O and custom boards for commercial and industrial applications.

Technical Support

Software examples

VB - Visual Basic

VBA - Visual Basic for Applications

RS232 wiring

The drawing below is for our units that have a 4-pin RJ-11: (6P4C = 6 Position 4 Conductor). The modular cable is reverse wired - the same as a standard telephone.