This is a great blue backlight LCD display. As the pin resources of controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. However, with this I2C interface LCD module, you will be able to realize data display via only 2 wires. If you already has I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic Compatible for based project. Features - Color: As shown - Material: Electronic component - Size: 12x6x1cm - Come with IIC interface, which can be connected by Line. - This is a great blue backlight LCD display - With this I2C interface LCD module, you will be able to realize data display via only 2 wires - It is fantastic Compatible for based project. - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand