The StitchMaster PedalPro is a universal foot control designed for use with select Singer sewing machine models, including 301, 301A, 400, 401, 401A, 403, 404, 404-1, 404-4, and 404-5. This foot pedal operates on 110/120V power and provides reliable control for sewing tasks. It is compatible with various machine models, although some may have changed the style of foot control used over the years of their production. The PedalPro offers a consistent and responsive sewing experience, making it a versatile accessory for compatible machines. Its straightforward design ensures ease of use, allowing for smooth operation during sewing projects. Whether upgrading or replacing an existing foot control, the StitchMaster PedalPro is a practical choice for maintaining sewing performance across multiple models.