This newly designed Electronic Foot Controller works with most 220 volt, two-wire cord systems and it takes just a few seconds to mount. Plus, it has super-steady speed control and heat-resistant. Speed Control ensures reliability and consistent performance. The stylishly designed controller is also equipped with a wire lock device for a secure fit. Not to mention, its durable housing measures 6" (L) x 4" (W). This foot controller is suitable for use with 220-volt, 2 wire systems.