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. card slot: Yes (FAT32 format), maximum support 32G Micro- card Through Editor software (official download), users can create and design their own display interface.The micro- card slot is dedicated for upgrading firmware/HMI design.Flash memory: 16 MB for storing fonts and images Working 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-5B Effective 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 272x480 Touch type: Resistive Number of touches: 1 million Backlight: LED Backlight life: (average) Greater than30, 000 hours Brightness: 250nit (NX4827T043_011N) 0% to 100% in 1% steps 230 nit (NX4827T043_011R) 0% to 100%, adjusted in 1% steps Operating voltage: 4.75 5 7 V Operating current: VCC=+5V, brightness is 100% - 250 - mA Sleep mode - 15 - mA Recommended power supply: 5V, 500mA, DC Working temperature: 5V, humidity 60%-20 25 70C Storagetemperature: -30 25 85 C Working humidity: 25 10% 60% 90% RH Output high voltage: IOH=-1mA 3.0 3.2 V Output low voltage: IOL=1mA 0.1 0.2 V Input high voltage: 2.0 3.3 5.0 V Input low voltage: -0.7 0.0 1.3 V Serial mode: TTL size: 12cm x 7.4cm Material: ABS colour: blue Package Contents: 1 x 4.3 inches Display 1 supply test board 1 x 4-pin grove cable 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.