Why design the two steps micro switch

Why design the two steps micro switch
Micro switch is used for X-ray machines to control static imaging and X-ray exposure to help doctors keep away from radiation.Newheek micro switch is divided into 1 step micro switch, 2 steps micro switch and 3 steps micro switch.1 steps micro switch is to press the direct exposure, so two levels of the hand brake are designed to prevent exposure caused by the wrong trigger.The 1 step of two hand locks is to prepare exposure, when the doctor touches the button carelessly, can prevent exposure happening, reduce radiation dose.2 steps micro switch is equipped with socket.Newheek 2 steps micro switch has L01 type, L02 type and L04 type hand brake, which can meet the needs of different customers.