Advanced ESP32 C3 chip: Power your projects with the ESP32 C3 chip, featuring strong processing performance and Wi-Fi connectivity High-resolution display: Features a 1.28-inch round LCD screen with 240x240 resolution for clear and vivid visuals Interactive knob: Includes a rotary knob for intuitive menu navigation and easy setting adjustments UART UI interface: Simple UART interface enables smooth integration with smart home control systems LVGL support: Fully supports LVGL to create rich graphical user interfaces, suitable for hobbyists and developers Development board: ESP32-C3 LVGL Screen type: IPS Interface: UART GUI support: Yes CPU frequency: 160 MHz RAM: 400 KB Flash: 4 MB Screen resolution: 240x240 Display brightness: 300 cd/m Wi-Fi: Supported Bluetooth: Supported Operating voltage: 5V Operating current: 100 mA Operating temperature: -20C to 70C Secondary development: Supported Color: Black Material: Plastic + Metal Package Contents: 1 x Knob Switch Display Note: Other items not included. Lighting and display differences may cause slight color variation. Measurement tolerance: +/- 1-3 cm.