Features: When using 12864 screen connect to the EXP1and EXP2 of the mainboard, and there is no touch function in this modes. When using the serial screen, it is connected to the TFT or AUX1 on the mainboard through RS232, and there is a touch function. This is a 3.5-inch screen, larger and with a better feel. Two working modes can be selected for high compatibility by updating the firmware through theSD card. These two modes correspond to different firmware. These two modes can be switched through a button. Specifications: Appearance size: 110x58mm/4.33x2.28in Power input: DC5V Card voltage: 3.3V/5V Note: Due to the problems of lighting effect and shootingangles, there will be certain tolerances in the product, please understand. Please allow 1cm errors due to manual measurement. Package includes: 1 Set TFT35V3.0.1 Touches Screen