3 x 3 Stainless Steel Key Switch are mostly used in lockers that act as a reliable locking system. It is manufactured with rigid engineering materials that make them robust in construction and highly reliable. It is a square shaped lock having dimension of 3 X 3 inches. It can only be opened or closed only with its key and can be used in secure applications such as corridor, restroom, lighting controls in commercial buildings etc., 3 x 3 Stainless Steel Key Switch is provided with three control options such as open, close and hold open that make it easier to control.