This is a powerful 3.5'' HMI, which is member of Nextion family.
Features include: a 2.4" TFT 320 x 240 resistive touch screen display,
4M Flash, 2KByte RAM, 65k colors.
480 x 320 Resolution
RGB 65K true to life colors
TFT Screen with integrated 4-wire Resistive Touch Panel
Easy 4 pin interface to any TTL Serial Host
16M Flash memory for User Application Code and Data
On board micro-SD card for firmware upgrade
Adjustable Brightness:0~180 nit, the interval of adjustment is 1%
5V500mA DC recommended power supply
Document link: https://www.youtube.com/results?search_query=Nextion+HMI
1 X 3.5'' UART HMI LCD Module
1 X 4P Cable
1 X UB to 2pin connector