A phidget is a relay board that can turn on or off an electric device and is controlled by a computer. They are made by a company named Phidget. You can get more information about all of the different products they offer on their website at
Phidget.com. They offer a range of I/O relays to control different types of devices so if you need help choosing the right one for your application contact them at
support@phidgets.com or 403-282-7305.
Basically, if you can turn it on with a switch you can control it with a phidget. Things like lights, fans and noise makers are a few of the possibilities. In Booth you can easily control all of these device using the Device Control menu in the Global settings section. You can see a video about Device control
here.