Focus on Serial Port & Network communication software.
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We would like to support more devices for our software.
Be our Affilates or Resellers
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Tutorial for NCD R8X and ProXR

NCDProXR Control for VB2005 and 2008

NCDProXR Control for VB6

Consultant Service
We have been working on serial port communication software for more than twelve years. We are experienced in software to control serial port/USB, network devices. Any quesion, please contact us.
National Control Devices, LLC specialized in USB, Ethernet, WiFi, RS-232, ZigBee, and Bluetooth Relay Controllers, allowing computer controlled switching from a local computer or from anywhere in the world.
 Relay Pros
 Robot Electronics
 Velleman Inc.
 Velleman Store