This is a 1.54 inch IPS LCD high definition liquid crystal display chip driver module, and it released ST7789 and SPI. IPS LCD display. High Efficiency Definition.PI. Adjust the direction of the display. Full field of vision. Working temperature: -20 Celsius - 70Celsius. Humidity: 5% - 95% relative humidity. Product name: 1.54 inch IPS LCD liquid crystal display module Operating voltage: 3.3V Screen size: 1.54 inch Resolution: 240 x 240 Interface type: SPI output Driver chip: ST7789 Number of needles: 8 Working temperature: -20 Celsius - 70 Celsius Working humidity: 5% to 95% RH Common pins: GND: negative pole of the power supply VCC: 3.3V positive input power SCL: SPI clock terminal SDA: SPI data terminal RES: OLED screen reset terminal (need to reset once after power on) DC: data / command selection terminal CS: activation signal (available at low level) BLK: Black light control (available at low levels) Color: Blue Material: PCB Size: 44 x 32 x 4mm Package contents: 1 x 1.54 inch IPS LCD Liquid Crystal Display Module Only the above package content, other products are not included. Note: Light shooting 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.