... not an on-off switch for power. 1,The speed controller and the lead wire connector of the motor areconnected ... ,then it is turn clockwise.2,If SPEED VOLUME switch of the speed connetroller is turned clockwisenumber of toration of ... .3,It is possible to control and designate the speed of the motorbetween 90~1350rpm.4,If the START/ ... be installer and turnned off.WEBSITE: www.houlemotor.com Speed controller