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USB-based 8 Relay Output, 8 Isolated Input, Digital I/O System

4.0 ratings  4   (1 customer reviews) | Write a Review
Product Q&A     3 Questions | 4 Answers     Read all Q&A
Key Highlights

USB interface

Integral screw terminals with strain relief

8 isolated (5 to 28 V) AC/DC digital input channels

Form C (SPDT) relays

6 amps at 120 VAC

Rugged steel enclosure


TracerDAQ® software included for acquiring and displaying data and generating signals

Universal Library includes support for Visual Studio® and Visual Studio® .NET, including examples for Visual C++®, Visual C#®, Visual Basic®, and Visual Basic® .NET

Comprehensive drivers for DASYLab® and NI LabVIEW™

Supported by MATLAB® Data Acquisition Toolbox™

InstaCal software utility for installation, calibration, and testing

Supported Operating Systems: Windows® 8/7/Vista®/XP SP2, 32-bit or 64-bit

Adobe PDF Product Data Sheet - PDF printable
Adobe PDF Product User's Manual - PDF printable
Software and Driver Downloads


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  • Pricing
  • Reviews
  • Q & A
  • Overview
  • Specifications
  • Included/Optional Software
Part Number Description Price Quantity Purchase
Prices shown are in U.S. dollars for orders placed within the U.S. For international orders, please contact one of our distributors in your area.
SwitchAndSense-8/8 USB-based 8 relay output, 8 isolated input, digital I/O system
$329.00 Add to cart
Other Options
USB-ERB08 USB-based 8-channel electromechanical relay interface device
ratings  (4 reviews)
$279.00 Add to cart
USB-ERB24 USB-based 24-channel electromechanical relay interface device
ratings  (8 reviews)
$389.00 Add to cart
USB-PDISO8 USB-based eight Form C relay and eight isolated high-voltage input interface device
(0 reviews)
$329.00 Add to cart
USB-PDISO8/40 USB-based eight Form C Relay and eight isolated high-voltage input interface device with 40-pin connector
(0 reviews)
$329.00 Add to cart
USB-SSR08 USB-based solid-state eight I/O module interface device
(0 reviews)
$389.00 Add to cart
USB-SSR24 USB-based solid-state 24 I/O module interface device
ratings  (1 reviews)
$439.00 Add to cart
PCI-PDISO16 PCI-based 16 electromechanical relays, 16 isolated (500 V) digital input board
(0 reviews)
$479.00 Add to cart
PCI-PDISO8 PCI-based 8-channel, high-voltage, high-drive digital I/O board
ratings  (3 reviews)
$325.00 Add to cart
Accessories & Cables
CB-PWR-9 Replacement power supply, 9V, for USB-SSR24, USB-SSR08, USB-ERB08, USB-PDISO8, USB-PDIS08/40, SwitchAndSense-8/8, 6K-ERB08, 6K-SSR-RACK08, USB-2020 - non-interchangeable US plug
$16.00 Add to cart
PS-9V1AEPS230V Replacement 230 V power supply, 9 V output, for SwitchAndSense-8/8, USB-2020, USB-ERB08, USB-PDISO8, USB-PDISO8/40, USB-SSR08, USB-SSR24 - interchangeable plugs available separately
More Options...
$29.00 Add to cart
Australia Plug Australian interchangeable plug for power supplies $10.00 Add to cart
Europe Plug European interchangeable plug for power supplies $10.00 Add to cart
UK Plug UK interchangeable plug for power supplies $10.00 Add to cart
US Plug US interchangeable plug for power supplies $10.00 Add to cart
DASYLab® LITE DASYLab Lite includes all drivers, comes without analysis, limited module count, and includes one Layout Window
ratings  (3 reviews)
More Options...
$499.00 Add to cart
DASYLab® BASIC DASYLab Basic includes all drivers, all standard modules (except Signal Analysis and Actions), and one Layout Window
(0 reviews)
$1,299.00 Add to cart
DASYLab® FULL DASYLab Full includes all drivers, all standard modules, 200 Layout Windows, and Control Sequencer
(0 reviews)
$1,799.00 Add to cart
DASYLab® PRO DASYLab Pro includes all drivers, DASYLab Full version, plus all add-on modules (without third-party modules)
ratings  (3 reviews)
$2,499.00 Add to cart
DASYLab® RUNTIME DASYLab Runtime allows you to run an existing worksheet application on an additional computer (with compatible hardware configurations)
(0 reviews)
$449.00 Add to cart
DASYLab® UPD Basic DASYLab upgrade to the latest Basic license
(0 reviews)
$259.00 Add to cart
DASYLab® UPD Full DASYLab upgrade to the latest Full license
(0 reviews)
$359.00 Add to cart
DASYLab® UPD Lite DASYLab upgrade to the latest Lite license
(0 reviews)
$99.00 Add to cart
DASYLab® UPD Pro DASYLab upgrade to the latest Pro license
(0 reviews)
$499.00 Add to cart
DASYLab® UPD RT DASYLab upgrade to the latest Runtime license
(0 reviews)
$99.00 Add to cart
TracerDAQ® Pro Out-of-the-box virtual instrument suite with strip chart, oscilloscope, function generator, and rate generator – professional version
ratings  (8 reviews)
$199.00 Add to cart

Product Reviews

4 / 5

Ease of UseValueTechnical Support
5 / 5 4 / 5 5 / 5

100% of reviewers recommend this product.

Page 1 of 1
4/5 March 19, 2014
Quick and Efficient Discrete I/O

I have used the Switch and Sense 8/8 device in several applications requiring low count discrete I/O signals. The Switch and Sense 8/8 is extremely easy to integrate into my VB.NET applications using MCC Universal Libraries, and always runs reliably in our industrial environment.

Job Title: Controls Engineer
Industry: Automotive Safety
Application: PC based discrete manufacturing controls
Yes, I recommend this product

Was this review helpful? Yes (0) / No (0)

From: Ogden, UT, USA
Company Size: 5000+
Software Used: Visual Basic
Ease of use


Technical Support

Product Q & A

I cannot find example programs for this device.

Job Title: Test Engineer

2 months ago

Ben Toronto, ON

Hello Ben - Currently, there are no product specific examples for the Switch & Sense 8/8. However, our Universal Library does come with a set of generic examples that demonstrate how to use each functions or method that the device supports. For the Switch &Sense 8/8 please reference examples ULDO04/05 for your relay support and ULDI04/05 for your digital input support.

2 months ago

Was this Answer helpful? Yes (1) / No (0)

Where can I find windows 7 software for the switch & Sense 8A

I have about 40 S&S 8a installed running XP but now need to get the systems onto windows 7

Industry: Vision

5 months ago

AndrewMachin UK

Hello AndrewMachin - It is important to know if your hardware is the old/obsolete model (SwitchAndSense-8) or the new/current model (SwitchAndSense-8/8). The obsolete model had its own driver, and that driver was frozen at WinXP (it is not compatible With Win7). The current model uses InstaCal and the MCCDAQ CD software, which is compatible with current Windows versions. You state your model as “8A” which I am quite sure is the obsolete model paired with a 230V power supply. Please feel free to contact us if you have any further questions.

5 months ago


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Can multiple units be used to increase the total channel count?

Job Title: Senior Staff Engineer
Industry: Photonics
Application: Vacuum system control

22 months ago

Jeff Rochester, NY

Yes, multiple devices can be used to increase I/O count. Note that each device added will require a seperate USB port.

13 months ago


Was this Answer helpful? Yes (0) / No (0)

Yes, multiple Switch & Sense 8/8 devices may be used to increase your channel count. You could also use our USB-PDISO8 (which is identical to the Switch & Sense 8/8, with the exception of the dimensions) allowing you to take advantage of the on-board single port USB hub to daisy chain units together for increased channel count. For more info, please visit: http://www.mccdaq.com/usb-data-acquisition/USB-PDISO8.aspx

22 months ago


Was this Answer helpful? Yes (0) / No (0)

The SwitchAndSense 8/8 expands the capabilities of desktop personal computers by providing eight isolated AC or DC inputs and eight electromechanical relays in a single USB compatible system. The inputs monitor 24 V AC or DC inputs while the output relays provide 6 Amp (Form C, SPDT) outputs at 120 VAC or 28 VDC. Screw terminals provide easy field wiring to all inputs and outputs.

The SwitchAndSense 8/8 is completely plug-and-play. There are no switches, or jumpers on the board. All board addresses, interrupt channels etc. are set by your computer's USB plug-and-play software.

Digital I/O
Number of Channels: 8
Relay Channels: 8
Measurement Type
Measurement Type: Digital I/O
Interface List
Interface: USB
Included Software
TracerDAQ® TracerDAQ® is an out-of-the-box application that allows data to be generated, acquired, analyzed, displayed and exported within seconds of installing Measurement Computing data acquisition hardware. TracerDAQ offers four different data acquisition applications; a Strip Chart, an Oscilloscope, a Function Generator and a Rate Generator, all of which are accessed via a common, easy-to-use menu page.
InstaCal InstaCal installation, configuration, and test software in one package simplifies these important steps as you turn your PC into a measurement system. Installation detects new hardware and configures your computer and DAQ device. Test routines verify that all the board's features are operating, and will speed you to a quick resolution.
Universal Library Universal Library programming libraries for Windows® Visual Studio® programming languages, and others. A complete function library to simplify the configuration and operation of your measurement board. A single, universal set of functions operates all our products so you only have to learn to use our library once.

ULx for NI LabVIEW™ ULx for NI LabVIEW™ Advanced Driver for use with NI LabVIEW™ 2010-2014. Allows quick development of instrumentation, acquisition, and control applications with Measurement Computing hardware devices
Optional Software
DASYLab® Software DASYLab® Software lets you interactively develop PC-based data acquisition applications by simply attaching functional icons. DASYLab offers real-time analysis, control, and the ability to create custom graphical user interfaces (GUIs). What’s more, in contrast to other graphical programming environments, which can require weeks of training to master, DASYLab has a very short user-learning curve. Many applications can be configured in a few minutes, rather than days or weeks.

MATLAB® Support for MCC Products MATLAB® Support for MCC Products – MATLAB® is a software environment for data acquisition, data analysis, and application development. MATLAB supports MCC hardware by using the MATLAB® Data Acquisition Toolbox™. MATLAB supports the data acquisition and analysis process along with interfacing with data acquisition devices and instruments, analyzing and visualizing the data. It also produces presentation-quality reports to share results with others.
TracerDAQ® Pro TracerDAQ® Pro provides four virtual instrument applications used to graphically display and store input data – and generate output signals – within minutes of installing Measurement Computing data acquisition hardware. The applications allow the user to customize appearance, store configurations for future use, save data to a file for export and – with the use of interactive hotspots – change settings while the application is running.