Relay Controllers, Zig B, Ethernet Relay Switch, USB Relay Switch
Design, Manufacturing, and International Shipping of
Custom Computer Control Electronic Devices

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USB Relay I/O A/D Devices
USB Relay Controllers

Relay Controller Boards
RS-232 Relay Controllers

Ethernet Relay Boards
Ethernet Relay Controllers

Wi-Fi 802.11b Relay Controllers
802.11b Relay Controllers

Relay Controllers Allow Computer Controlled Switching
Relay Controllers

Mirror Modules
Mirror Modules

Remote Wireless Relay Control
Wireless Relay Controllers

ZigBee Relay Controllers offer Standardized Low-Cost
ZigBee Relay Controllers

Video Switchers
Video Switchers

Digital Potentiometer
Digital Potentiometer

Analog to Digital Converters
Analog-Digital Converters

Pulse Width Modulation or Light Dimmers
Pulse Width Modulation

What's New

USB Relay Controller Boards Now Shipping

Our New Relay Controllers offer a USB Interface, Integrated Temperature Sensor, and 8-Channels of Analog to Digital Conversion, and 2, 4, and 8-Relay Configurations....

Analog to Digital Converters Now Shipping

Up to 48 Channels of 12-Bit Analog to Digital Conversion at a Realistic Price...These Controllers Can Expand to Control Relays in Addition to Voltage Monitoring....

Our New ProXR Series Have Grown Again This Year!

New Devices Combine the ProXR Command Set and New Analog to Digital Commands, Allowing Data Collection and Control from a Single Board!!! By Standardizing the Command Set, It is Possible to Integrate Any Size Relay Controller into your Application with NO SOFTWARE CHANGES!!!

4-Channel 5-Amp ProXR Controller

With 8-Channels of 10-Bit Analog to Digital Conversion, Includes Temperature Sensor.

Programmable Digital Potentiometers

Now it is Possible to EASILY Integrate Programmable Resistors into your Next Computer Control Application. Digital Potentiometers Allow Computer Controlled Programmable Resistance 3 Values, 256 Steps per Value, and up to 256 Channels of Outputs.

XR Series: Add More Relays

Add Relays to ANY NCD Device with an XR Expansion Port. These Expansions Offer a Powerful Upgrade Path for the Most Demanding Computer Switching Applications.

2-Channel 30-Amp ProXR Relay Controller

With 8-Channels of 10-Bit Analog to Digital Conversion, Includes Temperature Sensor

Built to Expand at the Hardware and Software Level

Our New Line of USB Relay Controllers Combine Expandable Relay Control with Integrated Analog to Digital Conversion - Temperature Sensor Included!!! ProXR Commands Set a New Standard that will NEVER Become Obsolete!!! Drop In Replacement for RS-232 Versions!!!



National Control Devices, LLC
PO Box 455
Osceola, MO 64776
Office: (417) 646-5644

Last Updated: August 14, 2007
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