I purchased this in a lot of electronics/musical equipment from an estate sale. It only includes the pedal and power adapter shown. According to the label on the bottom of the pedal, it also uses a foot switch, which was not included. I don't have a guitar to test, but I plugged in a 1/4" headphone plug into the footswitch jack (same size), and was able to calibrate the pedal using Expression steps 1 through 8 on the instructions. The LED lights worked and flashed green 3 times, showing a successful calibration. I was not able to calibrate the Distortion steps 1-4 because I don't have a foot switch. Sold as-is.