BOSS FS-7 Dual Foot Switch
They say:
Space-Saving, Multifunctional Dual Footswitch
FS-7 is a compact dual footswitch for remote control of effect pedals or amp channel switching. Two footswitches are arranged in tandem, which saves space on effects pedal boards. Two selectable modes for latch or momentary allow for control of a wide range of equipment.
