ITEM NAME:220V/250V Adjustable Controller Dimmer Switch For Dimmable Light Bulb Lamp E4F3 220V/250V Adjustable Controller Dimmer Switch For Dimmable Light Bulb Lamp E4F3 Rotary Dimmer; Adjusts light brightness according to your favor Dim the lights to save electricity and extend bulb life Equipped with a user-friendly knob Dimming can be achieved quickly and easily User can transfer the light to appropriate brightness according to actual needs Switch Type: Knob Output: 50Hz Supply Voltage: AC 220V/250V Electric current:4A (Max) Size: 80mmx80mm Material: PC Flame-resistant material Color: White Package included: 1 x Light Dimmer Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-1-3cm.