ITEM NAME:5Pcs 1602 16x2 Character LCD Display Module with IIC/I2C Serial Interface Description: This is IIC Serial 16X2 LCD module . With this I2C interface LCD module, you will be able to realize data display via only 4 wires. If you already has I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for Arduino based project Interface: I2C Specification: I2C Address: 0x27(it can't be changed ) Sofware version :0022 SDA (DATA) - analog input pin 4 SCL (CLOCK) - analog input pin 5 Pin Definition : GND〠VCC〠SDA〠SCL Back lit : Blue Supply voltage: 5V Contrast Adjust : Potentiometer Backlight Adjust : Jumper Package Includes: 5 Pieces LCD Display Module Note: Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks !.This is IIC Serial 16X2 LCD module. With this I2C interface LCD module, you will be able to realize data display via only 4 wires. If you already has I2C devices in your project, this LCD module actually cost no more resources at all.