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And the TT1 is a very small transmitter that is nice to use on a camera, with a low profile and no extended antenna to get in the way. I use the TT1 a lot to trigger standard channel devices, inculding MultiMax's and Profoto strobes with built in PocketWizard recievers. As mentioned you need to set up the TT1 using the software via the USB connection, but you have the option of setting two different channels, and choosing between them using the switch on the TT1. Your Plus II's are I think limited to just standard channels 1 through 4, so you want to pick ones in that range for your situation.
An important thing to remember is that the TT1 is made in different models for either Canon or Nikon, so contrary to what was mentioned above, my experience is that your camera brand needs to match the brand your TT1 was made for. I am pretty sure you are out of luck to make the TT1 act like a simple trigger device, because it must communicate with your camera properly in order to become configured to send a trigger signal out. And another thing you should do is to follow the recomended turn on sequence of the TT1 before the camera.