i searched and found nothing. can someone explain to me how these work. i have never seen them before. how do u configure them and what does each of the 4 prongs do?
example:
http://www.jameco.com/webapp/wcs/st...toreId=10001&catalogId=10001&productId=404582
example:
http://www.jameco.com/webapp/wcs/st...toreId=10001&catalogId=10001&productId=404582