◆ 可選帶以下功能： Optional with the function as follows:

→ 兩極單擲 2PST (2 Pole Single Throw)

→ 兩極雙擲 2PDT (2 Pole Double Throw)

→ 兩極雙擲帶中間斷開 2PDT with center off

→ 點動功能 Momentary act