Comfortable rotating button, stepless speed regulation, comfortable knob, easy to rotate and effortless flame-retardant, high temperature resistance, easy to clean and not deformed The cold-pressed steel frame structure is more aligned with the panel, and the installation is and it is not easy to be damaged or deformed Simple, stylish, versatile, suitable for a variety of decoration styles It is suitable for the installation and replacement of most brands of ceiling fan electric fan speed controllers