... case of power failure. power supply: 220V / 380V Low noise Industrial Door Operator. ModelKGT6.35-ZKGT6.35S-ZKGT6.50-ZKGT6.50S ... barrier,garage door opener,swing gate operator,sliding gate opener,industrial sectional door operator ,road blocker ,bollard and so on.4 ... east ,South Africa etc.8.ODM/OEM service is welcome. Industrial Door Operator new product