Features: Serial port command control: man-machine interface is all completed by the upper computer software, and the lower MCU only needs to use serial port and device interaction instruction to improve the development efficiency Various debugging methods: support serial port download and SD card download, support PC simulation debugging, support simulators and equipment synchronous debugging. Automatic online upgrade: the upper software automatically updates online when the device downloads the latest upper software Resolution 400*240 and 800*480, support a variety of configuration controls: button controls, progress bar controls, text controls, pointer controls Support the basic GUI instruction (painting, painting line, rectangle, etc.), support for image format BMP, JPG, JPEG, PNG Specifications: Touch mode: resistive touch Operating voltage: 4.75-7V Operating temperature: - 20~+ 70℃ Type: 3.2", 5.0" (Optional) Resolution: 400*240(3.2"), and 800*480(5.0") Size: 9.5 x 5cm / 3.74 x 1.97in Weight: 60g, 151g Package included: 1 x LCD Display Module 1 x 4P cable 1、Serial port command control: man-machine interface is all completed by the upper computer software, and the lower MCU only needs to use serial port and device interaction instruction to improve the development efficiency 2、Various debugging methods: support serial port download and SD card download, support PC simulation debugging, support simulators and equipment synchronous debugging. 3、Automatic online upgrade: the upper software automatically updates online when the device downloads the latest upper software 4、Resolution 400*240 and 800*480, support a variety of configuration controls: button controls, progress bar controls, text controls, pointer controls 5、support the basic GUI instruction (painting, painting line, rectangle, etc.), support for image format BMP, JPG, JPEG, PNG