... box, all functions are controlled by electronic tube, stepping motor and servo motor, Specifications:Double elasticType: SM-808P 6F sock type: ... number: 84-200N Speed: 300-350rpm Power supply: Driving motor: 1.00KW Fan motor: 0.75KW Control box: 0.80KW Floor space: ... , all functions are controlled by electronic tube, stepping motor and servo motor, complete function, and easy operation.One main color ...