N: RTD14005
A: relay
D: http://documents.tycoelectronics.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Data+Sheet%7FRT1%7FIJ1%7Fpdf%7FEnglish%7FENG_DS_RT1_IJ1.pdf

N: LTV-816
A: opto
D: http://media.digikey.com/pdf/Data%20Sheets/Lite-On%20PDFs/LTV-8x6.pdf

N: PS1024AL
A: button
D: http://media.digikey.com/pdf/Data%20Sheets/E-Switch%20PDFs/PS1024AL-BLK.pdf