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National Control Devices, LLC


USB 16-Channel Contact Closure Input Scanner Detector


USB Contact Closure Detection

USB 16-Channel Contact Closure Input Scanner Detector

Product Code: ZSCAN16PROXR_USB

ZSCAN16PROXR_USB Contact Closure Input Monitoring
Data Collection and Control with Future Expandability in Mind.  This ProXR Series Controller is Feature Rich and Ready to Grow with your Needs!
ZSCAN16PROXR_USB Contact Closure Input Detector

USB ZSCAN at a Glance

  • Monitor Contact Closure Inputs on Network
  • Onboard USB Interface Module
      - Plugs Directly into USB Port
  • Mounts as a Virtual COM Port on Computer
  • Read up to 256 Inputs
  • Trigger Relays Based on Input Value
  • Base Station Software
     - Point & Click Interface
     - Use to Discover on Network
     - Read Status of Inputs


This Product:

USB 16-Channel Contact Closure Input Scanner Detector
Stock#: ZSCAN16PROXR_USB $133.00

Related Products:

USB 32-Channel Contact Closure Input Scanner Detector
Stock#: ZSCAN32PROXR_USB $179

Power Supply Available

PWR12 Power Supply
The PWR12 is regulated power supply providing clean power necessary for the performance of these boards
Stock#: PWR12 $24/ea

Desktop Control

N-Button Pro
Desktop Control & Monitoring
Purchase N-Button fot this controller
N-Button Pro creates desktop widgets to turn relay on/off directly without any programming.

Order Today with This Board for Only $99
Stock#: N-Button Pro $169

Desktop Control

MirC Relay
Desktop Relay Control
  • 16 Widgets Available
  • Control Relays
  • Read Sensor Levels

  • Right From Your Desktop!
Stock#: N-Button_Lite $49.00



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USB Contact Closure Detection

Mounts as a Virtual COM Port on your Computer
Monitor and Read Contact Closure Inputs Using a Computer
Monitor Inputs, Trigger Relays for Full Contact Closure Control

USB Contact Closure Monitoring

With this Scan Series Controller you can monitor Contact Closure Inputs using a computer.  With minimal programming, data collection and control from a single controller allows any computer to talk this device from anywhere on the network.  The SCAN Series command set allows you to read anywhere from 1 to 32 banks of 8 inputs in a single query.  A single bank contains 8 inputs.  Reading 32 banks will report the status of 256 inputs.  It doesn't stop there, because we are focused on relay control you can add relays to the board (up to 256) and control them using the data collected from the inputs.  Remember these are contact closure inputs ONLY no voltage can be applied to these inputs.  Simply connect to your computer and this board mounts as a Virtual COM Port on your PC, allowing easy programming from any language that supports serial communications.

Mounts as a COM Port

This ProXR series controller connects to the USB port of your computer and will mount as a COM port on your PC.  USB Drivers will most likely be needed and can be found in the resources section to the right and will also be available in the Base Station Software.  Once powered up, the controller waits for a command.  A command consists of a few bytes of data in numerical format 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.

ZUSB ModulesUSB Relay ZUSB Module

This board is equipped with a ZUSB Module.  The ZUSB communications module adds USB communications to the board.  The ZUSB module is powered from the USB port of your computer and includes a 6' USB Cable.  The board itself will require 12 volts of power and can be hard wired or you can purchase a "wall wart" type Power Supply at checkout.

Sending Commands

Base Station Software is available at no charge to get you up and running fast (more on Base Station below).  Once powered up, the controller waits for a ProXR command.  A command consists of a few bytes of data in numerical format (ProXR Enhanced Command Set) 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.  When a command was sent to read the status of the contact closure the status is sent back.

Easy Software Development

Most of our customers write their own program for controlling these devices. Since you can use almost any programming language, you can use one that is most familiar to you so you don't have to learn a new language.  These boards support the Serial Port Profile, meaning they will mount to the computer as a virtual com port. This makes it very easy to send commands to the device.

Plug-In for Visual Studio

The NCD Component Library is a plug-in for the Visual Studio 2005/2008 that greatly simplifies the communications to the NCD product line.  The samples can be run in Visual Studio and fully customizable to your needs.  Over 40 samples included with this free download!  Component Library.

Base Station Software

Base StationBase Station will assist you in learning how this device functions and is the ultimate reference tool for setting up, testing and controlling this device.  Base Station software supports every feature of this device - no other controller manufacturer even comes close to offering this type of software.  Base Station works by communicating with your controller to identify the model and provides the appropriate graphical user interface for setting up and testing the identified device.  To help you get started and learn this controller Quick Start Guides are available for just about every feature.  As you discover a feature in Base Station a link is provided where you can easily download the Quick Start Guide.

ProXR Contact Closure

We've looked at the interface and the programming now let's take a look at the board design itself.  The ProXR series ZSCAN controllers are manufactured by hand for a highly accurate and reliable design.  Equipped with the XR Expansion Port relays can be easily added.  Fully tested before they leave the production facility each ZSCAN controller is ready to stand up to rigorous demands from heat, cold or vibration.  The best test of all is the numerous boards in the field from customers all over the world in all sorts of conditions.  Take it from us, these controllers will hold up!

XR Expansion Port

The XR Expansion Port is available for adding relays to the board.  Relay expansion boards can be added up to a total of 256 relays.  The Expansion Boards get their logic from the main board and will require 12 VDC power.

UXP Expansion Port

While the XR Expansion port adds relays to the board the UXP Expansion adds additional contact closure inputs to the board.  The ZSCAN series controllers are expandable up to 256 total inputs.  The controller is fitted with an UXP Expansion Port where you can add contact closure expansion boards to this relay.  Expansion boards can be added until you reach 256 total inputs.  The Expansion Boards get their logic from the main board and will require 12 VDC power.

ProXR Enhanced Firmware Installed

This board has ProXR Firmware installed that responds to the full ProXR Command Set.  The ProXR Firmware is the industry leading firmware for controlling relays with more commands and functionality than any other board on the market.  The list of commands and parameters this board is capable of is extensive.  ProXR Enhanced is the newly released enhanced version of the ProXR Firmware with more commands, more functionality and better control than ever before!  For a detailed list of all the commands with descriptions see our ProXR Enhanced Command Set.

RoHS Compliant

Compliance to ROHS Standards This board is led free and RoHS Compliant.  If your requirements are for RoHS compliant parts this board is manufactured with RoHS compliant led free parts and solder.

5-Year Warranty/Money Back Guarantee

ProXR series controllers are guaranteed against manufacturing and functionality defects for a full 5 years!  Not to mention a 30-day money back guarantee!  If for any reason you are not happy with a relay purchased from National Control Devices, simply return it within 30 days and we will give you your money back!  Controllers that are damaged by our customers will not of course be warranted under any circumstances. 


The boards sold are brand new units shipped from our office conveniently located in Missouri.  These boards are completely tested before they are released for shipping  With so many boards on our site it is impossible to stock boards, please allow two to three days production time for your order to ship.

Contact Closure Monitoring Is Here!

A more streamlined manufacturing process brings a more durable, reliable and better relay board to the market.  Here's a lists of great features:

    User Friendly Board Design
  • "Wall Wart" Power Capability
  • XR Expansion Port
      - For Adding Relays
  • UXP Expansion Port
      - For Adding More Contact Closure Inputs
  • Screw terminal connections make connecting to the board easy
    ZSCAN Features
  • Works with the full ProXR Enhanced Command Set
  • Highly reliable relay with industry leading command set
  • Base Station Software for Connecting to Controller