... 16.25%, 72.5%, 95%BUTTON INSTRUCTION1. Select Button: When the corresponding indicator light turns off, press ↑ ↓button to adjust PWM value 5%-95 ... %; while the corresponding indicator light turn on, press ↑ ↓button to choose 4 kinds of pre-set : 5%, 16.25 ... the RED4 POWER switch, oil pump power off. Press Select button, indicator lamp light, and press arrow ↑ ↓ to choose pre-set rank, and ...