Knob Circular，Household appliance，with Control Knob，Round LCD Display，Round OLED with Knob 

Smart Home Knob Circular Oled Control Panel，Tft Lcd Module Round Screen Rotary Display ，Switch Encoder Knob.
The OLED display with knob is very suitable for applications or products required a control knob which can show the information on it, such as coffee machine, audio system applications.
Touch Screen Production and Customization
www.touchlcddi...