... power supply voltage: + 5V 3, backlight, power indicator, contrast control potentiometer I2C/TWI LCD1602 Module Introduction2013 latest ... 16 characters LCD, contrast control knob, backlight selector switch and IIC communication interface. For beginners, the LCD ... 0x272, power supply voltage: + 5V3, backlight, power indicator, contrast control potentiometer, backlight selector switch4, concise design, ...