The duplex elevator LOP DOWN panel refers to a Landing Operating Panel (LOP) down call function used within a duplex or group control elevator system. It forms part of a group or duplex lift control setup used within coordinated system operation.
As part of the elevator landing operating panel, the duplex down call button is linked to the group control elevator system to support down call registration within a shared lift environment. This setup supports down call operation within group-controlled lift systems.