New electronic foot pedal / speed controller with a two pin plug. Compatible with the following Singer sewing machines: 401 / 401A, 403 / 403A, 404 Slant-o-Matics and the model 301 / 301A that uses separate cords for the foot pedal and power. This electronic pedal is easier on the feet than the older button style and does not contain fragile carbon disks that have a tendency to heat up or break if dropped. 110V.  Part 619494-088.