Oriental Motor SS31 Speed Control Pack / Speed Controller. New old stock / Open box. The item appears unused, but the outer package may have stains, scratches, or storage wear due to long-term storage. Only the items shown in the photos are included. Please check all photos carefully before purchasing. This item is for AC100V systems. No operation test has been performed unless otherwise stated. This is an industrial electrical component. Please confirm the model number and specifications before purchasing.