If you want your PC to interact with equipment in the "Real World" from its "Virtual World" you need our Relay Controller that was originally designed in response to a customer request. Circad designed, started electronics manufacture, and delivered the first working product within two weeks from the initial request asking if it was possible! 
This 16 way High Current smart relays controller is controlled from a PC using simple text commands over a virtual USB COM port. It also has 8 Digital inputs allowing switches and sensors to feed back to the PC software. 
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