Used item of which I am not familiar.  I found the name by searching for a similar item under SMC brand but I am unsure of its correctness.  Please view all pictures and ask questions to determine if this item fits your application.  I am selling as "not working" since I do not know that it does.  So purchase for purposes of parts or repairing yourself.  Send questions and I will do my best to answer but I have no technical knowledge of use or function.   I accept returns within 30 days but I offer no warranty, implied or expressed, on its function or operation.  Thanks for viewing.