... Three PhaseController :GCS6410 AMF module, Or DK707,DEEPSEA for optionalFrequency and Speed :50Hz/1500rpm, adjustable to 60Hz/1800rpmVoltage ... on a same frame steel skid. ·Built-in damper for anti-vibration.·Small size, low weight, easy to operating ... auto adjustmentStandard accessory:Common steel base frame, MCCB air breaker, Damper, Exhaust silencer, Flexible pipe, Battery & connecting wires, Tools ...