sp, DP, 성, 전자 스위치에서 DT 기능
In electronic switches, “sp” stands for “Single Pole,” “DP” stands for “Double Pole,” “성” stands for “Single Throw,” 그리고 “DT” stands for “Double Throw”; essentially describing how many independent circuits a switch can control (“pole”) and how many positions it can switch between (“throw”) within a single switch mechanism.