Features:

Good function:
The LCD with I2C port greatly enriches the human-computer interaction functions, and when they are connected to the controller, the controller without too many external ports will not occupy multiple IOs, and will not restrict other functions of the controller. It has only two bidirectional data lines, a serial data line and a serial clock.

Specifications:
Display: 2-lines x 16-characters
Four Pin Definition: GND, VCC, SDA, SCL
Default I2C bus address: 0 x 3F for PCF8574AT chip, 0 x 27 for PCF8574T chip
Working voltage: 5V
LCD controller: HD44780
Adjust Contrast: Potentiometer
Adjust Backlight: Jumper

Package includes:
2 x LCD display
2 x I2 C serial interface