N: button
D: http://documents.tycoelectronics.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1437565-2&DocType=CD&DocLang=EN

N: header
D: http://www.components.omron.com/components/web/PDFLIB.nsf/0/1D642D622E2FDCF685257201007DD590/$file/XG4_1110.pdf