In any operation in which both hands need to be used, a footswitch is a perfect way to add greater control. It free up your hands to perform other procedure while make the operation in control with your foot. This foot switch is momentary action and can be wired to be either push-on or push-off. A positive switch feel and an audible "click" when pressed. Could be used in industry equipment and other fields need foot switch. The us customers need to use a voltage converter to make the foot switch work normally when using it.