电梯门上下切换

第一按键控制电梯门向上运行（电机正转）

按下该按键则电梯门向上运行，松开按键电梯停运

第二按键控制电梯门向下运行（电机反转）

按下此按键则电梯门向下运行，松开按键电梯停运

-The elevator door up and down to switch the first button control elevator door up running (the motor is transferred) to press the button to the elevator door up running, release the button elevator outage keys to control the elevator doors down running (motor reversal) Press this button, the elevator doors down run, release the button the elevator outage