The KOMA Elektronik FT201 Analog Filter / 10 Step Sequencer, like all of KOMA pedals, features a patch bay and an infrared sensor as a modulation source that can be patched to any control.
The sequence length is selectable between two through ten steps and the sequencer speed control can turn the sequencer up toward audio raters or down all the way to turning it off all together.
In addition, the sequencer can be slaved to an external clock, reset by an external gate signal, and the filter cutoff and resonance can both be voltage controlled.
This device features five simultaneous outputs: The high pass, band pass, and low pass filter audio outputs, and control voltage from the sequencer and the IR sensor.
It is fun to mix two or all three more of this filters outputs through separate signal paths, and the sequencer and IR sensor in combination provide very interesting modulation sources.