TST71218=TST WITH CONDUCTIVE B Configuration (Pole-Throw): Single Pole - Double Throw Sealed Device: Yes Contact Base Material: Copper Alloy Switch Contact Plating Material: Gold over Nickel Process Sealed: Yes Single Pole - Double Throw Copper Alloy Gold over Nickel | Toggle Switch | Part Number: 4-1437564-1 | Internal Number: 4-1437564-1 | Alias Number: TST71218 | TE Connectivity