This module consists of a 2.0-inch display module with an SPl interface and an EC11 rotary encoder. They are not connected but simply integrated on a single circuit board, forming an integrated module. This design is more compact and aesthetically pleasing, making it easier to operate. GND: Power Ground VCC: 3.3V power supply positive SCL: Clock interface for SPl communication of the TFT screen SDA: Data interface for SPl communication of the TFT screen RES: Reset pin DC:Data Selection : Chip Select Signal, effective with low voltage : TFT Backlight Adjustment, default is fully on, can be left unconnected KO: Can be used as the menu return button or confirmation button PUSH: Key interface of EC11 A, B: Phase A and Phase B of EC1 Color: As Shown Material: PCB Package Contents: 1 x 2.0-inch TFT display with EC11 rotary encoder combination module Only the above package content, other products are not included. Note: Light reflection 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.