This 16 x 2 LCD with a yellow-green backlight was specially developed for low-power applications. It is perfect for your handheld applications since its standard operating voltage is 5 V. This 1602 LCD is compatible with the LCD Display I2C Interface . Specifications Input Voltage Range: 4.5 V to 5.5 V Supply Current: 1.5 mA Operation Voltage for LCD: 5 V Backlight Forward Current: 120 mA Backlight Forward Voltage Range: 4.1 V to 4.3 V