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1602 LCD screen can display 2 lines x 16 characters, with i2c serial interface, blue display.
Built-in independent potentiometer, backlight can be adjusted through the back potentiometer.
Power supply: 5v; I2C address: 0x27; wiring method: GND—GND, VCC—VCC, SDA—A4, SCL—A5.
Compatible with most development boards, such as Arduino, Raspberry pi, Tinkerboard, Nano pi, Banana pi, stm32, etc.
Widely used in: Internet of Things, school electronics projects, smart buildings, maker DIY projects, etc., can display letters, characters, numbers, real-time clock or temperature.

Specifications:
Display: 2-lines x 16-characters
Four Pin Definition: GND, VCC, SDA, SCL
Default I2C bus address: 0 x 27 for F8574T chip
Working voltage: 5V
Adjust Backlight: Potentiometer
Package includes:
3 x LCD display
1 x 10pin F-M jumper wires