This product has been replaced by ZSCAN48PROXR_ZRS
| NCD Component Library | The NCD Component Library is a Plug-In for Visual Studio 2005/2008 that greatly reduces software development time, effectively reducing most control operations to a single line of code. This free download includes many example applications covering a wide range of topics. |
Wiring Diagrams![]() Wiring Diagrams: several simple ways to wire a relay for various applications. |
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Watch as we show you how to Set Up the Hardware and Software necessary to use your USB Relay Controller

Learn how computer controlled relays communicate and control

Learn the basics of wired communications and find the right wired controller for your application

Learn about Induction Suppression and how to counter it using Capacitors

Learn about Analog to Digital Conversion and its uses

Learn how to find the Com Port that your Device is using

Learn about the Expansion Options available to use with our controllers
| Discontinued - This item has been replaced by a new Item, see product description for details | |
| Stock#: USCAN32PROXR | |
| 1-9 | $142.00 |
Our Scan Series Controllers monitor Contact Closure Inputs, via an enabled Computer. With minimal programming, Data Collection and Control from a Single Controller allows any computer to talk to our devices as though they were directly connected to a serial port.
Our New USB Series Relay Controllers make it easier than ever to add computer controlled switching to your most demanding computer control applications. Simply connect to your computer and this controller mounts as a Virtual COM Port on your PC, allowing easy programming from any language that supports serial communications.
This controller connects to the USB port of your computer and requires a 12VDC Power Supply. Once powered up, the relay controller waits for a command. A command consists of a few bytes of data. Usually between 2 and 6 bytes. Once the command has been received, the controller processes the command, and sends you back ASCII character code 85 to signal the completion of your command.
Read More About USB Communications
ProXR refers to a set of standardized commands used for computer control and data collection. A controller that supports the ProXR command set is a controller that is built to control up to 256 relays, using commands that can be sent to any controller that offers ProXR compatibility. This allows software developers to create programs for our products, then upgrade or change connectivity options without having to rewrite their software. ProXR commands can be sent to our controllers via the RS-232 serial port, the USB port, Bluetooth, Fiber Optic, Wireless ZigBee/Mesh, Ethernet, and Wi-Fi 802.11b...all without rewriting your software....simply develop your programs to work with the serial port of your computer. Let ProXR controllers manage the rest. Detailed information about the ProXR command set can be found in the ProXR Manual.
Building a solid foundation for future hardware is what ProXR is all about. We have worked hard to modularize the ProXR firmware in such a way that it can support growth of features without sacrificing backward compatibility. Most controllers produced from 2007 onward will support our ProXR command set. These controllers will also include a XR Expansion Port, allowing you to add relays to any controller you choose. So if your needs for computer control increase, our controllers will be ready for your growth.
With all the control and backward/forward compatibility you have come to expect from the ProXR series command set, this controller allow you to send simple commands to activate relays, read the status of relays, activate up to 16 relay timers, and control up to 256 total relays using the XR expansion port. All relays are electronically latched, simply send a command to turn the relay on, send a different command to turn the relay off.
Discontinued - This item has been replaced by a new Item, see product description for details | |
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Code: USCAN48PROXR Price: $185.00 Shipping Weight: 1.00 pounds | |
| Discontinued - This item has been replaced by a new Item, see product description for details | |
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National Control Devices, LLCWorld's Largest Manufacturer of Computer Controlled Switching Devices Since 1995. |
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