Selector

Sequential Switch

The SELECTOR is a 4 in 1 out sequential switch and includes the following features:
4 inputs with LEDs (lit when active)
2-4 step selector switch
Up, down and random selector switch
Holding Trigger and Reset buttons for 3 seconds replaces “up” mode with “pendulum”
Regular output as well as inverted output
Perfect companion to 5-Step Voltage Source (expands to 20 steps) and 16-Step Voltage Source (expands to 64 steps)

The SPUTNIK SELECTOR is a sequential switch that allows the automated routing of one of four inputs to a single output. The Selector is able to switch between 2, 3, or 4 of the inputs and four direction modes (three on the front panel and one “hidden” mode) are available. Input selection can be advanced by a trigger/gate input or manual button.
IN
Four inputs accept CV or audio signals with stage selection LED indicators.
PLAYBACK
STEPS
Three mode switch allowing for selection between 2, 3, or 4 inputs.
TRIG
Selection can be advanced by trigger, gate, or clock signals via an input jack or using the dedicated trigger button for manual selection at slower speeds.
RESET
Trigger input, gate input, or manual momentary button control of sequence reset. Reset defaults Selector back to Input A.
OUT
Signal output.
DIRECTION
Choose between 3 sequential modes at a time: UP (DCBA pattern), DOWN (ABCD pattern), or RAND (random pattern mode). PENDULUM mode (ABCDCBA pattern) is also available as a hidden feature when pressing and holding the “TRIG” and “RESET” buttons simultaneously for 3 seconds. This will swap UP with PENDULUM mode and is reversible by repeating the same process.
INVERT
Inverted voltage output.

http://sputnik-modular.com/selector-2/