... chain or bridge at the entrance&exit of the lift,convenient for driving in and out.PLC control system,simple operation,you ... control box, solenoid valve and electromagnetOptional ultrared rays alarm device, in case of unguarded entranceCompetitive AdvantagesWell and High Quality Control , Prompt ... , ODM Accepted , OEM AcceptedSafety/Quality Approvals EPO hydraulic double car parking lift