ITEM NAME:IIC/I2C/TWI 2004 Serial Blue Backlight LCD Module for UNO Mega2560 Description: 2004LCD Display Module, Blue Backlight. Fully assembled and tested LCD 20x4 Module. Display Format: 20 Characters x 4 lines Supply voltage: 5V For beginners IIC/I2C interface was developed to reduce the IO port usage on board. Package Includes: 1 Piece LCD2004 Module.2004LCD Display Module, Blue Backlight. Fully assembled and tested LCD 20x4 Module. Display Format: 20 Characters x 4 lines. IIC/I2C interface was developed to reduce the IO port usage on board. 1 Piece LCD2004 Module.