... module addresses: 0x27 2, power supply voltage: + 5V 3, backlight, power indicator, contrast control potentiometer I2C ... LCD, contrast control knob, backlight selector switch and IIC communication interface. For beginners, the LCD ... and record display of sensor data after programmed by controller(Arduino-Compatible).Specifications1, module addresses: 0x272, power supply voltage: + 5V3, backlight, power ...