SL-30U Digital FM Vibration Feed Controller vuelve a la configuración de fábrica

SL - 30U controlador de alimentación de vibración FM digital restablecer la configuración de fábrica

solve：

1. Turn off the power first

2. Press and hold the "knob" and "run/stop" buttons to turn on the power supply at the same time. When the display is "U080", the factory settings are restored.