Software - AWB USB Relay
I created this application to control a USB relay such as the one shown below in my observatory for switching on and off a mains electricity fed 230 volt AC (red bulb) lamp but it could be used for switching on an off any similar device.
Click here to download AWB USB Relay v100 setup.zip
Once downloaded right click the zip file and select the extract menu option and then double click the setup.exe file to install.
Below is a screen shot of the main screen.