SS Center Opening Automatic Lift

Automatic elevator means a passenger or freight lift operated by push buttons so that the starting, moving, leveling, holding and opening and closing of the doors is entirely automatic.The door open button is normally identified as the symbol ◄ | ► , DO, simply Door Open or Open. Door open buttons are usually located on the left side next to door close button in most elevators. Few elevator brans have their own symbol variants. This is the only door control button that is mandatory for the elevator.