This is another great I2C Interface. As the pin resources of Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or any other component. However, with this I2C interface module, you will be able to realize data display via only 2 wires. If you already have I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for Arduino based project.

Specification:

•     I2C Address: 0X20~0X27 (the original address is 0X20,you can change it yourself)
•     Supply voltage: 5V
•     the backlight and contrast is adjusted by potentiometer
•     Come with 2 IIC interface, which can be connected by Dupont Line or IIC dedicated cable
•     Compatible for 1602 LCD 2004 LCD 

Addressing Table of I2C Serial Interface Adapter Module