5pcs 1602LCD Display IIC/I2C/TWI/SP I Serial Interface Board Module Port For Arduino 1602LCD Display for Arduino Supply voltage: 2.5-6V Come with 2 IIC interface, which can be connected by Dupont Line or IIC dedicated cable I2C Address: 0X20~0X27 (the original address is 0X20,you can change it yourself) Size:41.5mm(lengh)*19mm(width)*15.3mm(H)