Keyestudio I2C LCD 20X4 2004 LCD Display Module For Arduino UNO R3 MEGA 2560 R3 White Letters on Blue Backlight

keyestudio 2004 I2C Module is a 20 character by 4 line LCD display with Blue background and White backlight.
The original 2004 LCD needs 7 IO ports to be up and running, ours is built with Arduino IIC/I2C interface, saving you 5 IO ports.
This LCD is ready-to-use because it is compatible with the Arduino Liquid Crystal Library.
LCDs are great for printing data and showing values. Adding an LCD to your project will make it super portable.
On the back of LCD display there is a blue potentiometer. You can turn the potentiometer to adjust the contrast.
Notice that the screen will get brighter or darker and that the characters become more visible or less visible.