The foot pedal is an external controller that you can connect to the Smoke Poodle.
It gives other ways to have control over your Smoke Poodle. Just connect it to the controller of your Smoke Poodle and find out!
Although it is called a foot pedal, this external controller is a perfect gimmick for a magician: put it in your left sock. Connect it with the controller that is in your pocket (the Smoke Poodle in your sleeve); and with a secret touch of your other leg or foot, you can now control your smoke without anyone noticing you touching something with your hands!