This is a combined synopsis/solicitation for commercial items under full and open competition, evaluated on a lowest-priced technically acceptable basis. The requirement is for 12 proximity switches (VLS ruggedized, magnetic, parallel-wired, DPDT) for delivery to Portsmouth Naval Shipyard on an FOB destination basis. The switches are brand-name mandatory to Powertronics Systems Florida Inc., AMETEK SCP, or TE Connectivity; quotes for other manufacturers will not be considered. Offerors must be registered in SAM, submit descriptive literature, and provide traceability documentation if they are not the manufacturer. No budget amount or performance timeline was specified in the notice.