is a seamless human-machine interface (HMI) solution that provides control and visualization interfaces between humans and processes, machines, applications or devices.Serial port: 4Pin_2.54mm is mainly used in of Internet of Things or consumer electronics. It is the best solution to replace traditional LCD and LED digital tubes.SD card slot: Yes (FAT32 format), maximum support 32G -SD cardThrough Editor software (official download), users can create and design their own display interface.The -SD card slot is dedicated for upgrading firmware/HMI design.Flash memory: 16 MB for storing fonts and imagesWorking with insufficient power can easily damage the model with blurred and flickering screen You may be suffering from a power shortage.RAM: memory storage variable 3584 .Serial port baud rate: standard 2400 9600 115200 Power off the first time No more repeated attempts to damage models A small connector is included in the package. Please try to power the with a phone charger through the connector to check if the is working properly. A high quality usb cable is required.Color: 64K 65536 colors 16-bit 565, 5R-6G-5BEffective area: (.) 105.50mm (length) x 67.20mm (width)Visual area: (V.A.) 95.04mm (length) x 53.86mm (width)Resolution: 480x272 pixels can also be set to 272x480Touch type: ResistiveNumber of touches: 1 millionBacklight: LEDBacklight life: (average) Greater than30, 000 hoursBrightness: 250nit (NX4827T043_011N) 0% to 100% in 1% steps230 nit (NX4827T043_011R) 0% to 100%, adjusted in 1% stepsOperating voltage: 4.75 5 7 VOperating current: VCC=+5V, brightness is 100% - 250 - mASleep mode - 15 - mARecommended power supply: 5V, 500mA, DCWorking temperature: 5V, humidity 60%-20 25 70CStoragetemperature: -30 25 85 CWorking humidity: 25 10% 60% 90% RHOutput high voltage: IOH=-1mA 3.0 3.2 VOutput low voltage: IOL=1mA 0.1 0.2 VInput high voltage: 2.0 3.3 5.0 VInput low voltage: -0.7 0.0 1.3 VSerial mode: TTLsize: 12cm x 7.4cmMaterial: ABScolour: bluePackage Contents:1 x 4.3 inches Display1 supply test board1 x 4-pin grove cableOnly 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.