ELECTRO HARMONIX NANO PITCH FORK PITCH/HARMONIZER

It transposes an instrument's pitch over a +/-3 octave range and features three modes which allow the pitch to be transposed up, down or both, simultaneously.
The pitch shift amount can be set to a fixed interval or continuously varied by an expression pedal or control voltage.
The 11 position Shift switch selects the maximum transposition interval.
The Latch button selects Latch or Momentary mode which affects how the footswitch and EXP input behave.
The default glissando rate is 60 milliseconds when nothing is plugged into the EXP input.