2018-10-02 02 October 2018 Door Operator-RMB-DR-01 Center Opening VVVF Door Operator RMB-DR-01 Brand: Mitsubishi. Type: center Opening. Description Specification Center Opening VVVF Door Operator RMB-DR-01 Brand: Mitsubishi. Type: center Opening. Center Opening VVVF Door Operator RMB-DR-01 Brand: Mitsubishi. Type: center Opening.