SWITCH is pair of Voltage Controlled Switches with selectable threshold in 1U format.
The switches are bi-directional - they can work in both directions, so can connect one input to either of two outputs, or either of two inputs to one output. 
 
Selectable Threshold:
Switching point of each of the switches is selectable by jumper on the back of the module:
+2.5v to support CV control by unipolar signals (e.g., gate signals or CV sequencers) or 0v to support CV control by bipolar signals (e.g., LFOs or Oscillators).
 
Usage:
The switches handles very fast switching speeds and can work with control signals above audio rate (up to 30kHz!) therefore it can be used for a wide range of functions ranging from controlled mute, routing sound sources to or from different modules, choosing between different modulation sources / sequences or using it as a modulator at audio rate frequencies.