OPERATING INSTRUCTION:
"For appliances with a polarized plug (one blade wider than the other).
To reduce the risk of electric shock, this plug is intended to fit in a polarized outlet
only one way.
If the plug does not fit fully in the outlet, reverse the plug.
If it still does not fit, contact a qualified electrician to Install the proper outlet.
Do not modify the plug in any way."
"Foot Controller Model YC-482R or TJC-150 for use with Sewing Machine Model MS3015."
(For U. S. A. market only)