while the first swing member 24 is not engaged with the engaging portion 21b of the knob 21 and hence is maintained in the neutral condition as a result as shown in fig7 c only the second swing contact plate is pushed by the pin 25e and inclined reversely so that the normally open contact 19b refer to fig6 b is brought into contact with the fixed contact 17h on the power supply side and the switch will assume the manual down position consequently electric current will flow in such a direction as to rotate the window motor m reversely and consequently upon the start of the window motor m the solenoid 30 is energized by the auto condition retaining circuit which will be described later at that time the sliding member 27 whose engaging recess 27a is engaged with the joint portion 25c is slidably moved in a direction shown by arrow d in fig9 at the same time the solenoid 30 is excited so that the movable iron core 30d is attracted to the fixed iron core 30e by the magnetic force thus tending to push the shaft 30a down to thereby push the locking arm 29 down however the arms 29b and 29c are located on the high step 26d of the sliding member 26 and the high step 27c of the sliding member 27 respectively and in this condition because the arm 29c is still located on the high step 27c of the sliding member 27 it cannot be locked since the arms 29b and 29c.