The Janome foot controller TJC-155 is a genuine model primarily for computer sewing machines, small lockstitch machines, and cover stitch machines, featuring a round 3-hole (wave + flat mixed type) plug. --- ◾︎Examples of TJC-155 compatible models • JANOME small lockstitch machines / cover stitch machines • Some electronic home computer sewing machines • Primarily models with a round 3-hole / wave + flat type socket Specifically, the following models are compatible with this type of jack: • JN508 / JN508DX / JN508DX-2B • JN51 / JN31 • JP210MSE / JP310 / JP500 / JP510 • Models such as RS808 / ME830 / CX11 / DC2020 In addition, the product description also mentions compatible examples for models such as JN508DX, JN509EX, NR30/NR34, JO427, J1212, F655Z, DL50L/DL50S, DL65D, 3040, 3080, 3090, 795/796, and HS700, explicitly stating that they have similar 3-hole terminals. ◉Checklist for determination 1. Please check the model number of your sewing machine (e.g., JN508DX, JP510, etc.). 2. Look at the socket and confirm that it has a round 3-hole (wave + flat) structure. 3. Check the JANOME accessory chart (sewing machine group table) to see if the model in question is included in the TJC-155. ※Please purchase only if you understand that this is a used item. No returns/no refunds. Thank you for viewing.