1. Housing: polycarbonate (PC) UL94-V-0 or UL94-V-2                                                                                                             2.Contact blade: phosphor bronze                                                                                                                              3.Gold plating: 50u" over nickel                                                                                                                                         4. UL applications: 250V AC, 2A (max.)                                                                                                                                          5. Durability: 750 matching cycles