Description This is another great IIC I2C TWI SPI Serial Interface 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 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 for based project I2C Address 0X20 0X27 the original address is 0X20 you can change it yourself the backlight and contrast is adjusted by potentiometerCome with 2 IIC interface which can be connected by Dupont Line or IIC dedicated cableI2C Address 0x27 I2C Address 0X20 0X27 the original address is 0X27 you can change it yourself Specification Compatible for 1602 LCDSupply voltage 5VSize 5 5x2 3x1 4cmPackage included 3 x IIC I2C TWI SPI serial interface module