1The motor speed controller is suitable for DC brush motor speed adjustment. 2Delay start time setting Range: 000 - 100 delay start to 100% speed time is adjustable between 0-10 seconds, the default is 1 second. 3Delay stop time setting Range: 000 - 100 delay stop time is adjustable between 0-10 seconds, the default is 1 second. 4The lower limit of the speed setting Range: 000- 080 minimum speed is adjustable between 0-80%, and less than the maximum speed setting, the default is 0. 5The upper limit of the speed setting Range: 000- 100 The maximum speed is adjustable between 0-100%, and greater than the minimum speed setting, the default is 100%.