AR-8 USB Relay Controller 2.1

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Publisher Description

USB Relays connect directly to your phone or tablet's USB or Micro USB port.
The AR-8 Relay Controller App is the ideal solution for hundreds of applications where control of external devices is needed. Connect the AR-8MF, AR-8X or AR-16 Relay Interface (or other Prolific PL2303 Android compatible GPIO device) to your Tablet or Phone's USB port and you have instant control of any electrical device that can be connected to a relay. Control lighting, motors, appliances, HVAC equipment, lock or gate solenoids, indicator panels, heaters, camera tilt and pan, robotics and thousands of other electrical devices. Great for field testing prototype products or testing equipment for reliability.
This App allows you to instantly energize or de-energize a relay from your tablet or phone's touch screen. The app's start-up screen allows you to control the eight AR-8 relays. Touch the relay button for the desired relay and the relay will energize (button will turn red). Touch the button again and the relay will de-energize (button will turn green). Label the relay buttons as needed from within the App or just create a text file using Notepad on your desktop PC and then copy to your tablet.
This app utilizes the most recent USB interface technology developed by Prolific Technology Inc., a leader in USB interfacing. This App is compatible with Prolific PL2303 GPIO Android devices (for control of GPIO pins - set App to AR-8MF).
Use EECI's CO-USB cable (available with Standard USB or Micro USB connector) for connecting the AR-8X to your tablet or phone. The AR-8MF uses a standard USB type A to USB type B cable.
The AR-8 Relay Controller App has been developed to run on Android operating systems Android 3.2 through Android 4.4 which includes Honeycomb, Ice Cream Sandwich, Jelly Bean and KitKat. Root permission or special driver not needed for most Android phones and tablets that use the Android operating system 3.2 or higher (Honeycomb and up), just enable USB Host Mode. The USB Host Diagnostics app by Chainfire may use used to troubleshoot USB issues with your phone or tablet and may allow you to turn on the USB Host Mode function if you are unable to locate the setting on your phone. Free telephone support is provided for this app by contacting EECI Support at (937) 349-6000.
Please visit for more information and support.
Custom Apps available for specialized applications, contact EECI's support staff for more information... (937) 349-6000.

AR-8 USB Relay Controller is a free software application from the System Maintenance subcategory, part of the System Utilities category. The app is currently available in English and it was last updated on 2014-12-28. The program can be installed on Android.

AR-8 USB Relay Controller (version 2.1) is available for download from our website. Just click the green Download button above to start. Until now the program was downloaded 2 times. We already checked that the download link to be safe, however for your own protection we recommend that you scan the downloaded software with your antivirus.

Program Details


Publisher Electronic Energy Control Inc
Released Date 2014-12-28
Languages English


Category System Utilities
Subcategory System Maintenance

System requirements

Operating systems android

Download information

File size
Total downloads 2


License model Free
Price N/A

Version History

Here you can find the changelog of AR-8 USB Relay Controller since it was posted on our website on 2016-11-09. The latest version is 2.1 and it was updated on on 2018-03-23. See below the changes in each version:

version 2.1

posted on 2014-12-28

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Release Date: 2014-12-28
Publisher: Electronic Energy Control Inc
Operating System: android
Type: Free