Where can I see the foot switch?

In the electronics industry, foot switches can be used in the configuration of small diamond and terminal machines.
In the medical field, as a kind of image acquisition control tool, foot switch can be widely used in all kinds of computer image acquisition workstation equipment related to video sets (such as B-ultrasound endoscope, pathological microscope, etc.).

The foot switch is actually a built-in stroke switch, when the foot gives the signal, the switch is executed automatically and inch, inch is the use of the foot switch, generally step on, a period of travel, release that is the end of work.