The old model of the elevator car does not have a floor button. Only the control switch or button is up and down. The operator needs to operate the elevator in the car and needs manual leveling. When there is a call to the floor, the car has a display that informs the operator that the call button has been pressed.
Elevators in the 1930s have more reliable and safer automatic lifts that are hard to see.
The old model's auto-lift button, a number of prominent round black buttons, they don't have most of the bulbs set up, so you can't see if the look is pressed. The command is transmitted to the equipment room control panel to control the elevator to stop. In the equipment room, maintenance personnel can see the selected floor in the board.
A small number of elevator buttons do not pop up, but remain in the press. If the button is pressed, the button will be cancelled. Part of the design of the button will not pop up until the end of the workstation.
Some buttons and elevator floor display one, the button will light up, but according to the position of the elevator.
A part of the elevator car is a button car. The car outside the car is a call button that is hung outside. The button of the car is also illuminated, so that the passenger knows that the elevator will stop at the parking space.
70 time elevator button
The new elevator (about seventy years) button is used for the bulb and the other is for the position indicator bulb. Create a selection of new feather touch buttons. Since then, the button operation is almost uniform, but the appearance is more style.
Then there are only a few features, namely the floor call button in the part of the manual lift (more for cargo use). When the call button is pressed, the button can be used as a push to other people, prompting the user to close the door as soon as the other floors of the elevator are ringing.
