The one stop volume stop. Twin input, twin output and minimum volume setting. 2 way setting for pedal allows adjustment for volume of instruments or for modulation control. Does all the volume things

Model: Behringer FCV100
Made: China
Type: volume
Power: 12v 
Draw: 50mA
Switching: n/a
Equivalent new street price (approx): $50-60
Mods: none
Accessories: og box manual
Condition notes: hardly a sign of use, very good condition

Controls
Minimum volume: sets the low threshold for when the pedal is fully down