Used Orange FS-1, normal signs of use, functions without issue.

From the Orange site:

The FS-1 is a compact, latching footswitch designed for simple, reliable amp control. Whether you're switching channels or toggling reverb, it’s built to do the job without fuss. Housed in a robust steel enclosure with a bright LED status light, the FS-1 is small enough to fit any board but tough enough for touring. It requires no power; just plug in via a standard quarter-inch jack and go. Designed to work seamlessly with a wide range of Orange amps and other gear, the FS-1 is the zero-nonsense way to take control of your sound with your foot.