Product Code: ZADSSR4XPROXR_USB_MIX
The latest version of the ProXR Series have interchangeable communications modules that can be swapped at will. Simply disconnect all power from the board and pull off one module and replace it with another.

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
| USB 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D | |
| Stock#: ZADSSR4XPROXR_USB | $170.00 |
![]() |
N-Button creates up to 8 desktop widgets to control relays without any programming. Order Today with This Board for Only $29 |
| Stock#: N-Button Lite | $49.00 |

At AccessNCD we give you access to NCD technicians, developers and other customers! Our highly trained technicians and developers responding are the same ones designing and using these boards. If you are working on a sensitive project your questions can be posted privately without being posted to the public forum. Visit Today!



USB Virtual COM Relay Controller with 8-Channels of
Analog to Digital Conversion and
XR Expansion Port
Our USB ProXR 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 ProXR series 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
NOTICE: This Device CANNOT be used in inductive control applications. Click Here for More InformationWith 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.
You can send commands to activate relays, deactivate relays, control all the relays at one time, plus you can send commands that tell a relay to turn on for a few seconds, minutes, or hours. You can assign 16 timers to any of the 256 relays, and set the timers to go off after the duration has expired. That's just the beginning, find out more about our ProXR Command Set.
Read More About the ProXR Standard
Analog to Digital Conversion allows you to read voltage levels from 0-5 volts using 8-bit or 10-bit resolution. This is particularly useful for reading temperature sensors (one temperature sensor is built into the board, shared with analog input number 8). A/D Inputs are also useful for reading light level sensors, thermocouples, switch closures, or just about any other kind of sensor you can think of. Built-In Pull-Up/Down Resistors keep the inputs quiet. Eight Different A/D Sample programs are available in the NCD Component Library. These samples are available as a free download and are compatible with Visual Studio. We've got sensors! Visit our Sensor Page for sensors that have been tested and work with all NCD A/D Boards controller.
Read More About Analog to Digital Conversion
N-Button Lite creates up to 8 buttons or widgets to control relays without any programming. A new button will be created and placed on the desktop of your computer for each relay that you want to control. N-Button Lite supports Serial Port/ USB and Network connection between PC and relay board. N-Button Lite Manager makes it easy to add any type of button to the desktop and change the properties.
Analog to Digital meters can also be added to your desktop to instantly read the status of any sensor or probe you may have connected to the board. Each meter is customizable and can be changed without any programming knowledge.| Relay Button widgets turn on/off relay directly. It has never been so easy to control relays before. | |||
![]() |
![]() |
![]() |
![]() |
| Relay Status widgets show status of the relay automatically. | |||
|
![]() |
![]() |
![]() |
| A/D Meter widgets display the value of A/D channel automatically. | |||
![]() |
![]() |
![]() |
![]() |
| Customized Button widgets allows you send any of the commuands in the manual to relay board. | |||
![]() |
![]() |
![]() |
![]() |
N-Button Lite is available as a free download. Look for the Desktop Control section to the right to download.
N-Button Lite version supports up to 8 widgets. If you want to add more than 8 widgets, simply upgrade to the N-Button Standard version.
ALL RELAYS ARE HERMETICALLY SEALED, Relay Controller Requires +12VDC Power Supply, Photos May Show Options or Accessories Not Included with Relay Controller. USB Specification Prohibits Relay Controllers from Being USB Bus Powered due to Surge Currents. NCD will NOT Design/Manufacture a Mechanical Relay Controller that is USB Bus Powered, Please Be Cautious of Any Manufacturer who Offers such a Device.
| Quick Start Guide | Quick Start Guide |
| Download USB Drivers | Download Latest USB Virtual COM Port Drivers |
| Download Manual | Download Product Manual |
| Download Software | Download Example Software and Source Code |
| 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. |
|
| Mechanical Drawing | Mechanical Drawing for this board |
USB 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D | |
|
Quantity in Basket:
None
Code: ZADSSR4XPROXR_USB_MIX Price: $170.00 Shipping Weight: 1.00 pounds | |
| USB 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D | |
Computer Control
Android Relays
iPhone Relays
Stand-Alone
Additional Products
Product Support
| SECURE SERVER |
|
Visit one of our other great web sites: www.SignalSwitch.com www.relaycontrollers.com |
English: 中文: ![]() |
|
National Control Devices, LLCWorld's Largest Manufacturer of Computer Controlled Switching Devices Since 1995. |
|
Please Note: Our office will be closed for Memorial Day on May 28th.