Features:Made of high-quality flame-retardant materials, durable and safe to use.It is suitable for the installation and replacement of most brands of ceiling fan electric fan speed regulators.The speed control switch is installed in bright and dark, and the installation is convenient.Simple and fashion, suitable for a variety of decoration styles.Five speeds are under your control. Comfortable rotating button, easy to rotate.Small ceiling fans and mosquito-net ceiling fans are not applicable. Specifications:Material: PlasticSize: Approx. 8.6x8.6x4.2cm/3.38x3.38x1.65inch Note:Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Speed Control Switch